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natali 33 [55]
2 years ago
9

The Weaver birds from the African savanna exhibit a trade-off between risking starvation and being hunted by predators. As a res

ult the birds that are of medium weight have the selective advantage and make up the majority of the population.
Which type of natural selection is at work here?

directional selection

disruptive selection

stabilizing selection
Biology
2 answers:
faust18 [17]2 years ago
8 0

Answer:

C. stabilizing selection

Explanation:

oksano4ka [1.4K]2 years ago
5 0
Vigilance is the natural selection at work.
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Which situations would be most likely to engage the anterior cingulate cortex?
maria [59]

Answer:

Which of the following situations would be most likely to engage the anterior cingulate cortex?

A waiter walks over to your table at a restaurant and holds an open menu in front of you.

You walk into the elevator of your apartment building and press the button for your floor.

You enter your classroom and find someone sitting in your usual seat.

A good friend asks you to remind him of your telephone number.

Explanation:

In order to meet the demand of the surrounding environment   by adjusting  the  motor outputs from the brain to the environments ,a part of the emotion control part of the brain( limbic system) called the anterior cingulate cortex is responsible for this.

Anatomically, the limbic system is made up of the primarily the amygdala, hippocampus, thalamus, hypothalamus, basal ganglia and cingulate gyrus.

Based on the this its(anterior cingulate cortex) functions are formation of emotion in the limbic system, and  possessing  of memory and learning.

it is also a major  parts of  of pain networks for pain modulation and perception.

Therefore whenever there is  change in the environment  from the prestored condition in the brain,(e.g the usual seat  in the class room  occupied above) the anterior cingulate cortex adjust the motor input from the brain to adapt to the new environment to take an action,whih in this case  leads to the reclaiming of the seat or any other necessary proactive action.

4 0
2 years ago
Breathing deeply is up to ________ more times efficient as breathing shallow.
joja [24]
The answer would be Four.
4 0
2 years ago
Four Students were having a discussion about how scientists do their work. This is what they said... Antoine: "I think scientist
stepan [7]

Answer:

Please see below  

Explanation:

Between all these kids carrying out this discussion, Tamara is the closest to guessing what scientists do. There is indeed a definite set of steps that scientists undertake in order to conduct science experiments. The scientific method is as follows:  

  1. observation
  2. measurement
  3. experiment
  4. testing the hypothesis
3 0
2 years ago
Autotrophs that utilize light as their energy source are
k0ka [10]

The correct answer is - phototrophs.

Some of the autotrophs are able to convert the electromagnetic energy from the sunlight into chemical energy in the form of reduced carbon (C). The autotrophs that are able to perform this are called phototrophs. The green plants and the algae are the most prominent members of the phototroph autotrophs.

In essence, the autotrophs are producers, meaning that they are able to produce their own food. The phototrophs are the part of the autotrophs that are able to use the sunlight to produce small amounts of ATP as well as the energy carrier NADHP. By producing the ATP and the NADHP the phototrophs manage to produce glucose, or rather sugars, which are actually their food.

8 0
2 years ago
Reena segregates the waste at home and put the bio degradable waste in a pot containing soil. She leaves it for 15 days and uses
seraphim [82]

Answer:

Reena is making compost to reuse or recycle biodegradable waste and convert it into a natural fertilizer.

Explanation:

By placing the biodegradable matter in the pot with soil, microorganisms living in that soil are able to decompose the wastes and produce fertile products. This fertilized soil is very useful in plant care because it provides many nutrients and benefits for needed the plants' growth.

Compost consists of a controlled oxidation biological process and microorganisms and other invertebrates such as earthworms are in charge of decomposition of the solid matter. The product is used as a natural fertilizer and is a good substitute for chemical fertilizers. When composting, temperature, and humidity must be controlled. The process lasts one week or two until the whole solid wastes are degraded and mixed with the rest of the soil.    

7 0
2 years ago
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