Natural selection is best described as
a. disruptive selection
b. stabilizing selection
С. a mechanism of evolution
d directional selection

Answers

Answer 1
(B.) Stabilizing selection

Related Questions

Drag each label to the correct location.
Annie wants to study the effect of glucose on bacterial colonies. She grows two colonies of bacteria—one with glucose present in the environment and one in an environment without glucose. Categorize the statements about the experiment as either hypotheses or observations.

Glucose may cause
an increase in
bacterial growth.
The bacterial colonies grown
without glucose don’t have
capsules around their cells.
Bacterial growth in the
glucose environment
increased rapidly and
then stopped after
some time.
Increased glucose may
lead to capsule
formation in bacteria.
Reset Next

Answers

Answer:

* Glucose may cause an increase in bacterial growth - HYPOTHESIS

* The bacterial colonies grown without glucose don’t have capsules around their cells - OBSERVATION

* Bacterial growth in the glucose environment increased rapidly and then stopped after some time - OBSERVATION

* Increased glucose may lead to capsule formation in bacteria - HYPOTHESIS

Explanation:

In an experiment, a HYPOTHESIS is a predictive and testable statement that aims to answer a scientific question while an observation is made based on the results obtained.

According to this question, Annie wants to study the effect of glucose on bacterial colonies. She conducted the experiment by growing two colonies of bacteria - one with glucose present in the environment and one in an environment without glucose. Based on this experiment, the following statements are categorized as:

- Glucose may cause an increase in bacterial growth is a HYPOTHESIS

- The bacterial colonies grown without glucose don’t have capsules around their cells is an OBSERVATION

- Bacterial growth in the glucose environment increased rapidly and then stopped after some time is an OBSERVATION

- Increased glucose may lead to capsule formation in bacteria is a HYPOTHESIS

Please answer both I would mark as brainliest.

Answers

#10 is A and #11 is D

What is that chemical compound?

Answers

Answer:

A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.

PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!

Choose all the answers that apply.

What does the cardiovascular system do?

a.) transports oxygen and carbon dioxide for the respiratory system

b.) carries nutrients for the digestive system

c.) works with the immune system to fight infection

d.) carries hormones for the endocrine system

e.) sends nerve impulses to the brain and spinal cord

Answers

A) transports oxygen and carbon dioxide for the respiratory system

Reproductive system
Explain How does a fetus get nourishment up
until the time it is born?

Answers

Answer:

The fetus gets it's nourishment through the umbilical cord that is connected to the mother's uterus

In fruit Flies a white eyed female is crossed with a red eyed male. What are the changes the offspring will be a white eyed male?​

Answers

Answer:

the chances of the offspring having white eyes is 50%

Explanation:

i used a punnet square to calculate the output:)

Answer:

25%

Explanation:

There's a 50% chance of the offspring being male & 50% chance female. The genotypes must be co-dominant otherwise their question doesn't give enough information to get an anwser. Also a 50/50 chance of red/white, so added together a 25% chance.

Also, the funny thing is that remember this from 7th grade so you must be reviewing things that evreyone learned a long time ago but forgot.

Our cells have many working parts that help the cell to survive and carry out its function. Which organelle releases energy in the cell necessary for all metabolic activities?

Answers

Answer:

Mitochondria

Explanation:

The mitochondria produce ATP, also known as energy. It is coined the power house cell.

mitochondria is the answer

names of five natural things from the word grid given below
AS T R PILM
o w LS PR P 0
RO AM
MS O LILIN
ART OTWAN
MIT
THE
IN
0
01
OTA NIMA
NA 0 OM
Q
RIO
R
LISI N​

Answers

Answer:

AIR

SEA

ANIMAL

PLANT

MONTH

Explanation:

These are the least I could get

Burrowing owls sometimes build their nests in holes that were dug by prairie dogs, coyotes, or badgers and have been since abandoned. They sometimes line the nests with cattle or horse dung. Why

Answers

Answer:

To avoid extreme temperature and keep away predators.

Explanation:

Burrowing owls sometimes line the nests with cattle or horse dung in order to avoid extreme temperature. The cattle dung protect the Burrowing owls from extreme temperature of the surrounding so they make nests close to these cattle dung. These dung has many insects which is a food of Burrowing owls and this cattle dung also keep predators away from Burrowing owls.

A biologist grows bacterial cultures to see if there is a relationship between time and growth rate. Here are the data. Which hypothesis test would you use to see if there a relationship between growth rates and time

Answers

Answer:

Direct relationship.

Explanation:

There is direct relationship between growth rates and time which means growth rate of organism increases with the passage of time. Direct relationship means if one increases the other automatically increases and if one decreases, the other also decreases. The growth of bacteria becomes double when more time passes and vice versa. After every 20 minutes, the population of bacteria becomes double.

Nonvascular plants have never evolved to the size of vascular plants, most likely because they lack Select one: a. a photosynthetic mechanism. b. an efficient mode of respiration. c. an efficient system for conducting water and minerals. d. nutrient and water absorption mechanisms. e. They lack all of these choices.

Answers

Answer:

The correct answer is c. an efficient system for conducting water and minerals.

Explanation:

Non-vascular plants lack the internal tubes or vessels that carry water and minerals or nutrients through the entire plant. Most of them are found in humid or submerged places, since this type of environment allows them to absorb water through the surface of their tissues. Non-vascular plants do not grow very tall due to the lack of structures normally associated with vascular plants. Non-vascular plants lack specialized vascular tissue (xylem and phloem) for conduction and internal support of water and food. Metabolites and other nutrients are transferred between and within cells by osmosis, diffusion, and cytoplasmic flow.

Organisms can pass on genetic information through asexual or sexual reproduction. Which of the following statements best describes how asexual reproduction differs
from sexual reproduction?
During asexual reproduction, offspring receive DNA from several parents rather than just one parent.
During asexual reproduction, offspring receive DNA as individual atoms rather than genes.
During asexual reproduction, offspring receive DNA from one parent rather than two.
During asexual reproduction, a parent cell divides by meiosis rather than mitosis.

Answers


During asexual reproduction, offspring receive DNA from one parent rather than two.

How can you tell from a food web which organisms will have the greatest biomass?

Answers

Answer:

How can you tell from a food web which organisms will have the greatest biomass?

The tropic level contains the greatest biomass in most ecosystems is producers. This occurs because producers get their energy from the sun, the sun is the most available resource, so there are the most at that level.

Explanation:

I hope that this answer has helped you to more thoroughly understand your question asked. If you have any further questions, please do not hesitate to ask them below.

Have a great rest of your day/night!

As a population grows past the ecosystem's ______ the size of the population will _____ until the size of the population stabilizes at a constant level

Answers

Answer:

carrying capacity , increase

Explanation:

Up to the the population carrying capacity the the population will increase to give a perfect balance and when the population will be much then the population will decrease.


3.1
Suggest which leaf carries out more photosynthesis and explain why.

Answers

Explanation:

Leaf that are really green, because they contain Lots of chlorophyll in the chloroplast which is the main site for photosynthesis

helpppppppppppppppppppppp

Answers

Answer:

o Glucose, which required light, water and carbon dioxide to form this substance

glucose!
when plants go through photosynthesis, they create a sugar to sustain (feed) themselves, called glucose.

What is one type of light that can be used for photosynthesis

Answers

Answer:

The majority of green light is useful in photosynthesis. The relative quantum efficiency curve (Photo 1) shows how efficiently plants use wavelengths between 300 and 800 nm. Green light is the least efficiently used color of light in the visible spectrum.

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