2. David is growing algae in a closed bottle for an experiment. The bottle is half full of water and half full of air. David floats the bottle in a pond for three weeks. At the end of the three weeks, David notices that lots of algae grew, but the bottle did not
sink lower in the pond.

Why didn't the bottle of algae get heavier during the experiment?


A. Tiny animals in the bottle ate the growing algae.

B. The sides of the bottle got lighter as the plastic degraded.

C. The bottle has a leak, which made it lose water to the pond.

D. The growth of the algae came from the air and water in the bottle.

Answers

Answer 1

Answer:

The answer Is D

Explanation:

The growth of the algae came from the air and water in the bottle.

Answer 2

The statement (D) is correct. The growth of the algae came from the air and water in the bottle.

What is an algae?

Algae is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades.

Moreover, algae are photosynthetic creatures. They are neither plant, animal or fungi. Many algae are single celled, however some species are multicellular. Many, but not all of red and brown algae are multicellular.

Therefore, algae are defined as a group of predominantly aquatic, photosynthetic, and nucleus-bearing organisms that lack the true roots, stems, leaves, and specialized multicellular reproductive structures of plants.

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Related Questions

What type of mutation is the following: ATCGAC to TTCGAC
a)point
b)insertion
c) deletion

Answers

Answer:

c) deletion is the type of mutation in the following

The answer is a) point.

Trapped oil can be discovered by geologists and extracted through __________.

Multiple choice question.
cross out

A)
mining

cross out

B)
drilling

cross out

C)
excavating

cross out

D)
climbing

Answers

Answer:

I think it is c

Explanation:

Which of the following could be seen directly In a karyotype of an unborn baby?

Answers

Answer: teeth.

Explanation:

Which organ uses the circulatory system to communicate with cells throughout the body to control the amount of sugar they have available?

Answers

Pancreas? Though im not sure


Describe binomial nomenclature with a single sentence

Answers

Answer:

Binomial nomenclature is a two word naming system using the genus as the first word and the species as the second word

Explanation:

For example, using binomial nomenclature we can classify a maple tree as the genus "Acer". Since there are so many species of maple trees, they have different names all starting with Acer.

- Acer rubrum = Red maple

- Acer saccharum = Sugar maple

I hope this helps!!

- Kay :)

Which correctly lists three water sources that contribute to a river system?

groundwater, ponds, streams
lakes, rivers, ponds
rivers, streams, watersheds
streams, lakes, oceans

Answers

Answer:

c

Explanation:

your welcome luv <3

The correct three water sources of a river system are rivers, streams,  and watersheds.

What is a river system?

A river system is  the pattern formed by the streams, rivers, and lakes in a particular drainage basin

Water sources of a river system

The water sources of a river system include the followings;

Rivers, Streams, Watersheds

Thus, the correct three sources of a river system are rivers, streams,  and watersheds.

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Need help pls if you can

Answers

Answer:

60

Explanation:

60 I think I’m not 100 percent sure

The question is in the picture.​

Answers

Answer:

A. because mitiosis creates a cell that is exactly the same as it's parent. It's kinda like having a parent/grandparent that looks just like you

Which is involved in engulfing?
(A)Golgi bodies (B)transport proteins (C)endoplasmic reticulum (D)cell membrane

Answers

Answer:

c

Explanation:

NEED THIS ASAP, ITS A FINAL!!! WILL MARK BRAINLIEST IF CORRECT.
The following chart shows the amount of four different minerals found in lake water and in the cytoplasm of algae:

Which mineral(s) did the algae uptake through active transport?

Calcium and sodium
Nitrogen and potassium
Nitrogen only
Potassium and sodium

Answers

Answer:

Calcium and sodium

Explanation:

Answer: Calcium and sodium

Explanation:Here is the chart

Which example is not an organism?

bacteria

lung

mold

human​

Answers

Mold is not an organism.

Answer:

Lung

Explanation:

1.
All living things are composed of cells.
Which action is not accomplished by repeated cell
division?
A.
a plant developing new leaves
B.
a broken bone growing back together
C.
a plant using sunlight to make its own foods
food
D.
an eight-pound baby growing into a 100-pound
teenager

Answers

Answer:

C

Explanation:

Everything else has to do with growth but C is talking about food/energy.

A plant using sunlight to make its own foods is accomplished by repeated cell division.

What do you mean by cell division?

Cell division is the process by which a parent cell divides into two daughter cells. Cell division usually occurs as part of a larger cell cycle in which the cell grows and replicates its chromosome before dividing.

There are two types of cell division: mitosis and meiosis. Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life.

In eukaryotic cells, or cells with a nucleus, the stages of the cell cycle are divided into two major phases: interphase and the mitotic (M) phase.

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In the image below, what atom is shown in white? URGENT!!!!

Answers

Answer:

Pick Hydrogen, but read below.

Explanation:

The blacks are Carbon. They have 4 connections. The left Carbon has 3 whites connected to it. It is not totally an exclusive answer, but the whites could be anything in Column 17 (F, Cl, Br, I) or Hydrogen. Likely it is hydrogen.

The answer is Hydrogen

Advantage of genetic connections

Disadvantages of genetic connections

Answers

Answer:

Advantage

Explanation:

- ups

When the process of mitosis is correctly completed, the daughter cells should contain exact copies of all of an organism's genes. Which biomolecule contains all of an organism's genes?

Answers

Answer: nucleic acids

Explanation:

The cell cycle is not regulated by proteins

Answers

Answer:

false

Two groups of proteins, called cyclins and cyclin-dependent kinases (Cdks), are responsible for the progress

Explanation:

Which gas directly increases the global temperature the most?

Answers

Answer:

Greenhouse Gases

Explanation:

A greenhouse gas (GHG) is any gas in the atmosphere that absorbs and emits radiation in the thermal infrared range. These are the fundamental cause of the greenhouse effect, which results in increased temperatures on Earth.

Answer:

CO2 increases global warming temp the most followed by CFCs ( chlorofluorocarbons) which are used in refrigerators and ACs but now banned.

Most species of E. Coli are harmless or even helpful forms of bacteria that are found in the human intestine. E. Coli can aid humans in digestion and provide protection from other invading bacteria, but if the bacteria move to the human excretory system, they can replace other naturally occurring bacteria (Lactobaccilli). This can lead to bladder and kidney infections. Researchers found that by replenishing the excretory system with the naturally occurring bacteria, the infection caused by E. Coli is cured. Based on the research, what inference can researchers claim about the effect of bacteria?

Answers

Answer:

The inference is that bacteria can be pathogenic or characteristic of the commensal microbiota of different organs.

Explanation:

The human coexists with commensal micro-flora or commensal biota that are in balance and protect it from other pathogenic microorganisms, that is why we constantly live with a group of bacteria that do not generate pathological conditions in our body and even promote the stimulation of the immune response. .

When this balance is broken, pathogenic or opportunistic microorganisms invade, this is how they proliferate and generate infectious diseases that threaten the balance or state of human health.

7. Cell division occurs as part of which process? *
Energy in food is released
O A cut on a person's finger heals
O A disinfectant destroys microbes
O The body eliminates wastes

Answers

Answer:

A cut on a person's finger heals

What are the possible blood types of a baby with a mom who is heterozygous for blood type A and a dad with type O?

Answers

Answer:

A & O group

Explanation:

Dad will be having io io allele and mom will be having ia io

The possible blood types for the baby are either A or O, with equal likelihood of 50% for each.

What is blood type?

A classification system called blood type explains whether or not specific antigens are present on the surface of red blood cells. Each of the four major blood types—A, B, AB, and O—has distinct antigen markers.

A and O are the two possible blood types for a child whose mother is heterozygous for blood type A (genotype AO) and whose father has type O (genotype OO).

A baby has a 50% chance of acquiring the A allele from the mother and a 50% chance of inheriting the O allele from the father because each parent gives one of their two blood type genes to their offspring.

Baby with blood type A inherits the A allele from the mother and the O allele from the father (genotype AO).

The child will have blood type O if both parents carry the O allele (genotype OO).

Therefore, the possible blood types for the baby are either A or O, with equal likelihood of 50% for each.

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what is one of the negative consequences of burning wast

Answers

Answer:

Toxic fumes

Explanation:

Answer:

It pollutes the groundwater

Explanation:

 

Which choice below is NOT a biomolecule?
O Carbohydrates
O Lipids
O Nucleic Acids
O Proteins
O Water​

Answers

Answer:

water

Explanation:

carbohydrates are used for short term energy

lipids are used for storing energy

nucleic acids are used to storage and expression of genetic information

proteins are used to build or repair muscles

The questions are in the pic, they are about gravity :)

Answers

2. Because the gravitational force from anything that small compared to a planet is so minuscule it's nearly impossible to feel or measure.

3. Because do not have life and other processes necessary to create the gasses and substances necessary to create an atmosphere.

4. If the amount of mass lost was large enough it would likely allow the moon to eventually orbit away

All of the following are characteristics of all
living things except the ability to
A. grow and develop.
B. maintain a stable internal environment.
C. change over time.
D. ability to move.

Answers

Answer:

i hope this helps

Explanation:

the process of maintaining a stable internal environment, and breakdown of it ... how groups of organisms change over time (generations, longer periods of time) ... ability to maintain balance, grow, reproduce, and carry out other life functions.

Characteristics of all living things includes grow and develop, change over time and ability to move.

Living things shares  similar characteristic and behavior.

These characteristics includes the following:

• All living things moves in one way or another

• Living things respirate (breath)

Nutrition are what makes living things stay alive and grows

Irritation occurs to all living things.

• All living things grows.

• All living things excretes waste product.

Reproduction makes living things multiply in number

• The end of a living thing is death.

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60 POINTS!! PLEASE HELP!!When the level of blood testosterone has increased past its set point, a negative feedback signal will be sent to the hypothalamus.


Based on the diagram, what will be the result of this signal?

A) The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will decrease.

B)The hypothalamus will stop production of gonadotropin-releasing hormone. As a result, follicle-stimulating hormone will no longer be produced and testosterone levels will start to decrease.

C)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will increase and testosterone levels will increase.

D)The hypothalamus will stimulate production of gonadotropin-releasing hormone. As a result, the production of follicle-stimulating hormone will be inhibited and testosterone levels will decrease.

Answers

Answer:

c

Explanation:

the answer should be b, i’m sorry if it’s wrong

mark me brainliest if the answer is correct, thank you in advance :)

how will CO2 and h20 leave your body after cellular respiration?

Answers

in cellular respiration, glucose and oxygen react to form ATP , water and carbon dioxide are released at by products

8. Which are indirect evidence of plate tectonics?
Earthquakes
Volcanoes
Mountains
All of the above
None of the above

Answers

None of the above. They all involve plate tectonics.

Theory is an idea in science true or false

Answers

Answer:

True

Explanation:

Answer: true

explanation:

Which of the following organelles are matched together with the correct energy conversion that they perform? Mitochondria: Chemorespiration Chloroplast: Cell Division Mitochondria: Chemorespiration, , Chloroplast: Cell Division, Mitochondria: Cellular Respiration Chloroplast: Photosynthesis Mitochondria: Cellular Respiration, , Chloroplast: Photosynthesis, Mitochondria: Chemosynthesis Chloroplast: Photorespiration Mitochondria: Chemosynthesis, , Chloroplast: Photorespiration, Mitochondria: Photosynthesis Chloroplast: Cellular Respiration

Answers

Mitochondria: cellular respiration
Chloroplast: photosynthesis

A sun and plant. An arrow pointing to the leaf is labeled A. The sun rays are labeled B. Arrows pointing away from the leaves are labeled C. A substance on the leaf is labeled D. Arrows from the ground entering the plant are labeled E. Which labels would correctly model photosynthesis?

Answers

Answer:

When the arrow is risen as the sun rays also because the shift of day to night

Explanation:

Plant

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One tablet costs $249.00 and a company needs to buy k tablets. What is the relationship between the total cost, C, and the number of tablets? Determine the domain. A. k=249C; The domain is C, the total cost of the tablets purchased.B. k=249C; The domain is K, the number of tablets purchased.C. C=249k; The domain is C, the total cost of tablets purchased.D. C=249k; The domain is K, the number of tablets purchased. A farmer has 280 acres of land on which he plans to plant two different crops, crop A and crop B. For each acre of crop A he plants, his expenses are $25, and for each acre of crop B, his expenses are $30. The farmer has a limit of $10,000 for the expenses of planting the 280 acres. If a represents the acres of crop A and b represents the acre of crop B that the farmer plants, which of these represent the limits of a and b? Help quick Ill give credit In what way was youth activism during the civil rights era the same as it istoday?O A. People used popular culture to raise awareness,O B. People participated in protests and marches.C. People wanted social justice.OD. All of the above are correct. Help me asap with this math problem!! Stephanie saw an advertisement for pizza on the television and asked her mother if they could have pizza for dinner tonight. Write 3 factors that influenced the food choice. ANSWER CORRECT FOR BRAINLIESTWhich of the following statements about the standard of living in Eastern Europe is true?A.The region has low life expectancy levels.B.Literacy rates are high across the region.C.Development levels are very low in all countries.D.Income levels are high throughout the region.Please select the best answer from the choices providedABCD Trapped oil can be discovered by geologists and extracted through __________.Multiple choice question.cross outA)miningcross outB)drillingcross outC)excavatingcross outD)climbing A school principal has to choose randomly among the six best students in each grade to be the school captain every month. For that purpose, she assigned each student a number. Then she rolled two dice numbered from 1 to 6 three times and selected the student whose number was repeated most often.Which of the following best describes the method used by the principal?It's an unfair method because each student will not post the same outcomes.It's a fair method because each result is an equally likely possible outcome.It's a fair method because it's a limited number of students.It's an unfair method because two or more students could get the same results. ___ is a set of algorithms that uses past user data and similar content data tomake recommendations for a specific user profile.Collaborative filteringContent-based filteringAn user data engineA recommendation engine PLEASE HELP WITH EXPLANATION!! THANK YOU ILL GIVE BRAINLEST 2. What is the mass of 5.3 moles of CaCl2? How does Schlosser show transparency in this passage from Fast Food Nation? In the image below, what atom is shown in white? URGENT!!!! TIME REMAINING09:51:51Which is the best definition of the term Romanesque? C=2.99m + 13.99, where c is the total monthly cost Emma goes miniature golfing. She pays $7.50 for an admission ticket and $6.25 for each round she golfs. The total amount Emma pays for admission and the number of rounds she golfs is $26.25. Which equation can be used to determine the number of rounds, x, that Emma golfs? Which example is not an organism? bacterialungmoldhuman Solve by completing the square: x^2+3x-9=0 which of the following inequalities matches the graph?