What is a mutation? Any change in the sequence of DNA's nucleotide bases O a change in the sequence of DNA'S phosphate groups a change in the sequence of DNA's deoxyribose sugars Oa change in the sequence of DNA's sugar of phosphate backbone
Answer:
A DNA mutation is when the DNA sequence begins to multiple out of control // copying mistakes.
Explanation:
state 4 ways by which through which a soil is depleted
Answer:
Explanation:
Leaching – Plant nutrients are lost beyond the reach of plant roots. Usually caused by excessive rainfall washing nutrients deep down into sub-soil beyond new roots reach.
Soil erosion – Top soil is lost by the agent of erosion e.g. wind, water.
Monocropping – This utilizes only specific nutrients from a particular zone making it exhausted. -It also causes accumulation of certain pests and diseases.
Continuous cropping –This continuously exhaust the fertility of land unless the the land if fallowed.
Change of soil PH -Use of either acidic or basic fertilizers affect soil pH and Consequently the presence of micro-organisms hence soil fertility affected.
Burning of vegetations –Destroys organic matter and soil structure. Nutrients are lost and soil exposed to erosion.
Accumulation of salts – Common in waterlogged areas and semi-arid areas in which poor drainage causes evaporation during the dry periods, making the soil saline.
Why only certain cell undergo mitosis
and why other cells undergo meiosis
Explanation:
Mitosis allows for cells to produce identical copies of themselves, which means the genetic material is duplicated from parent to daughter cells. Mitosis produces two daughter cells from one parent cell. Single-celled eukaryotes, such as amoeba and yeast, use mitosis to reproduce asexuallyand increase their population. Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. ... Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome.
Hope my answer explains things better for you!!
please answer this for me
Help Fill in the blanks?
Answer:
#5 sunlight
#6 DIe
#7 maybe bacteria
#8 i dont know
#9 DIe
#10 oxygen
These should be right
Let me know if these were wong
How do ultrasound waves clean jewellery
Answer:
They use ultrasound waves and chemicals combined to create bubbles that "cling" to the foreign particles such as dirt, oil, and unknown substances.
Explanation:
Ultrasonic cleaners are useful for jewelry cleaning and removing tarnish. They use ultrasound waves and chemicals combined to create bubbles that "cling" to the foreign particles such as dirt, oil, and unknown substances. The high frequency waves are sent out and pull the contaminants off the object.
Answer:
Ultrasound waves and chemicals are combined to create bubbles that "cling" to foreign particles such as dirt, oil or other unknown substances. The waves are sent out to extract these particles.
Explanation:
WILL GIVE BRAINLIEST
The region of the earth where ecosystems interact
Describe four factors that influence a population growth rate?
Answer:
predators, the space which they live in, the amount of food, and diseases
hope that helps
Explanation:
What is density of a liquid with mass of 17.4 and a volume of 20 mL ? Would this liquid float or sink at room temperature based on its density and the known density of water?
Answer: The density of the liquid is 0.9 g/mL
. Hope this helps but I can not answer the second part. Hope that it is beneficial to you anyway! :)
(Edit) This might help you figure it out: The relative densities of an object and the liquid it is placed in determine whether that object will sink or float. An object that has a higher density than the liquid it's in will sink. An object that has a lower density than the liquid it's in will float.
Explanation:
Answer:
i think it would float tbh
Explanation:
sorry if it isnt correct i am just trying to help
Based on your observations, how many cells are in anaphase?
A.14
B.41
C.10
D.19
Answer:
D
Explanation:
I think there are 19.
Answer:
There are 19 in the anaphase
Answer D.
Explanation:
Just did the Test.
In a balanced ecosystem with predators and prey, if the prey population decreases then....?
Answer:
Predator population will also decrease
Explanation:
This is because the predators are dependent on their prey without the prey they would starve and die out so with less possible food the less of a population for what ever eats that prey which can lead to a chain reaction throughout the ecosystem however it is also the other way around too the more possible food the more chance for babies to be born and not starve to death.
Need help pls I’m being timed
I believe the left chamber has a higher concentration of neon gas because it has more neon atoms in it, and the right chamber has a higher concentration of helium gas because it has more helium atoms in it.
what enzymes are produced by small intestine
PLEASE HURRY
Answer:chymotrypsin
Explanation:it gets secreted
Molecules that contain carbon and make up livin things
The term "phase" only refers to a state of matter in science (True or False)
True
False
Aquatic organisms are able to survive when the temperature decreases. These organisms survive even when the surfaces of lakes and ponds are covered with ice. Which property of water best explains how aquatic organisms can survive during freezing temperatures?
Answer:
Anomalous expansion
Explanation:
Anomalous expansion of water is the abnormal way water expands when exposed to low temperature.
At 4 degree Celsius , the density at the top layer is usually at the Maximum which makes the water sinks down and then the water in the lower layer rises up.
When the temperature drops below 4 degree Celsius, the water molecules at the top then freezes leaving the denser molecules at the bottom which doesn’t freeze as a result of their high density.
This way, organisms can survive in the water due to the lower layer not freezing.
What is the first aid for cramps?
Answer:
Take a hot shower
Massage the cramped area
Yup thats all i know
We all know that any cramp in our muscles is formed due to the secretion of lactic acid . This lactic acid is formed due to our muscles doing anaerobic respiration instead of aerobic respiration . Our muscles require oxygen to break down glucose itn energy and carbon dioxide . But our body muscles wont get this much needed oxygen due to which they will start to do anaerobic respiration where they produce energy without the usage of oxygen . When such a respiration happens lactic acid is secreted in our stomach , which makes our muscles start to form cramps . So we can say that tightness or soreness of muscles due to our muscles lacking oxygen is called as muscle cramps . So , a hot bath will be a very good remedy for cramps as it will let the oxygen pass through the body , thereby completely help the lactic acid turn into energy . When lactic acid breaks down completely to form energy the muscle cramps go away . Another first aid for cramps would be massaging the area with cramps . This will also increase the oxygen flow thereby making the lactic acid change into oxygen due to which the pain will go away . Another remedy for muscle cramps would be hot nor cold pads as they help ease the pain .
When soil or rock is carried into a water body due to erosion.
Topography
Infiltration
Sedimentation
Runoff
The cycle of the moon’s phases is predictable. About how long does it take to cycle from a first quarter moon to a full moon?
Group of answer choices
A. About one day
B. About one week
C. About one month
D. About one year
PLEASE ANSWER: Is oceanography a hard class to take in high school?
Answer:
There is quite a bit of work but if you are willing to do it and pay attention in class then it's easy. my teacher makes the class a lot of fun.
Explanation:
Answer:
it's pretty frustrating, mainly because there's an overwhelming amount of work, unless that's just my school but other than that its pretty easy, you just have to memorize a lot of stuff.
Explanation:
What is the root word of compositional?
Answer:
compose
Explanation:
Use subsoil in a sentence.
Answer:
The soil is loam and the subsoil Old Red Sandstone, interstratified with cornstone at Pippin's Hill in the north. Copy
Many soils have a topsoil layer that is more permeable than the clay subsoil. Copy
It also includes the air and water space above, and the subsoil and bedrock below that.
Explanation:
The epidermis is a muscle
True
Or
False
Answer:
false
Explanation:
because derm=skin and skin is not muscle skin is a type of tissue
hope this helped :)
Define 3 of the major parts of the skeletal system and list the
function(s) of each (bones, ligaments, and tendon, cartilage.)
Answer:
Bone
The major functions of the bones are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and hematopoiesis. Together, the muscular system and skeletal system are known as the musculoskeletal system.
Ligament
Ligaments connect the ends of bones together in order to form a joint. They also assist in holding organs in place. Tendon: A tough, flexible and inelastic band of fibrous connective tissue that connects muscles to bones.
Tendon
A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A tendon serves to move the bone or structure.
Cartilage
Cartilage: This smooth and flexible substance covers the tips of your bones where they meet. It enables bones to move without friction (rubbing against each other). When cartilage wears away, as in arthritis, it can be painful and cause movement problems.
1. List the major ways in which humans are damaging the environment
2. Floods can devastate an ecosystem, however they can also have a positive impact. Please explain the positive impacts major floods can have on the ecosystem.
3. How do seasonal changes in temperature, water availability and sunlight affect ecosystems?
4. Propose 5 ways that humans can help minimise the negative effects both natural events and human impact can have on ecosystems.
Answer:
1. The large number of the pollution going into the air becaue of overfarming, and the high demand for unrenewable resources.
2. The positive impacts that floods can have is that they can water plants for places in drought like places such as California. For areas that are vastly dry, rain could be essential to humans, plants and animals in need of it.
3. These changes affect the ecosystem puts the ecosystems in a rather different situation than the ecosystem and those supported by it to adapt to the newcomings occuring of different seasonal changes and much more.
4.
-There can be alternatives to not destroying unrenawable resources.
-Use electrical cars that don't pollute the air.
-Be resourceful with their water and don't use more than needed.
-don't litter.
-recycle.
PLZ NEED HELP ASAP!!
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.
Online Content: Site 1
What arctic animals will climate change affect? How will it affect these animals? (Site 1)
Answer:
The main arctic animals which will be affected by climate change are polar bears, seal, seabirds, and walrus.
Explanation:
Answer:
The main arctic animals which will be affected by climate change are polar bears, seal, seabirds, and walrus. It will affect these animals because they depend on ice for hunting, hiding, and breeding places.
Explanation:
I put this for egde and got a 100.
plz help me im being timed and i only have 20 minutes left
Answer:
2. stomach not part of the respiratory system
3. lungs not part of the digestive system
4. esophagus not part of the cardiovascular system
5. skin not part of the skeleton
hope this helps :)
About how much of Earth’s surface is covered by the Pacific Ocean? Identify the locations of at least two major mountain chains that extend over more than one continent.
Answer: covering more than 30%
Explanation:
Explain 3 ways of checking soil depletion
Nhen you are finished with the experiment, complete the following data analysis and submit your answe 1. Determine the volume of the box and the block. 2. Determine the ratio of the block to the box: volume of block (L)(W)(H) volume of bosc (DWH) 1. Multiply this number by 100 to turn it into a percent. 2. Complete this statement The volume of the block is percent of the volume of the box. 3. Determine the ratio of the number of hits to the number of shots: number of bits 100 shots 1. Multiply this number by 100 to turn it into a percent. 2. Complete this statement: The block was hit percent of the time. 4. Compare the results of step 2 to the results of step 3. Are the percentages similar? 5. Write a conclusion discussing the following items: 1. Based on your findings, do you think Rutherford's hypothesis was reasonable? 2. Restate Rutherford's hypothesis and describe how you tested it. 3. State whether your results support the hypothesis. If they do not, can you suggest some error in exp procedure (other than general human error) that might explain it? 4. Finally, explain how this experiment confirms the nuclear model of the atom and the idea that most of empty space.
Answer:
These are just the answer key. You will have to fill in the lower half of the questions yourself. I did not consider 32% and 1.6% approximately the same but the answer key did.
Hope this helps:)
Explanation:
The box’s measurements are: length = 50 cm, width = 25 cm, and height = 25 cm. The measurements of the block are: length = 10 cm, width = 10 cm, and height is 5 cm.
Out of 100 marble drops or shots, the marble hit the block 32 times.
volume of the box = 50 × 25 × 25 = 31250 cm 3
volume of the block = 10 × 10 × 5 = 500 cm 3
Ratio = 500/31250 = 0.016 × 100 = 1.6%
The volume of the block is 1.6% of the volume of the box
Ratio = 32 hits/100 shots = 0.32 × 100 = 32%
The block was hit 32% of the time.
Percentages will be similar and both be small percentages
Answers will vary.