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Gala2k [10]
3 years ago
7

It does not seem particularly surprising to us that we might find gill pouches, tails, or other such structures in humans. But w

e would be very surprised if we found hair, nipples or middle ear bones in fish, amphibians or reptiles. Why?
Biology
1 answer:
Pavel [41]3 years ago
5 0

Answer:

In the course of evolution mammals are the animals which are evolved recently as compared to other groups such as fish, amphibians, or reptiles.

In addition, fur or hairs on body, mammary glands, middle ear bone, warm-blood, et cetera are the characteristics of mammals.

These characteristics were evolved during the course of evolution; they were not present in ancestral organisms.

However, tail, gill pouches, et cetera are characteristics of our ancestral groups. Thus, characters can be sometimes observed in mammals.

But mammals characteristics can not be observed in organisms which were evolved before mammals such as fishes, amphibians, reptiles, et cetera.

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LekaFEV [45]

Answer:

Tectonic Plates and Plate Boundaries

There are three main types of plate boundaries:

Convergent boundaries: where two plates are colliding.

Divergent boundaries – where two plates are moving apart.

Transform boundaries – where plates slide passed each other.

6 0
2 years ago
Define the structure of human eye.​
sergiy2304 [10]

Answer:

he eye is made up of three coats, which enclose the optically clear aqueous humour, lens, and vitreous body. The outermost coat consists of the cornea and the sclera; the middle coat contains the main blood supply to the eye and consists, from the back forward, of the choroid, the ciliary body, and the iris.

Explanation: Right up there.

5 0
3 years ago
A student is constructing a model to illustrate the levels of organization for life on Earth.
Lisa [10]

Answer:

1: Population; 2: Biome;3: Ecosystem

Explanation:

Population refers to the number of people in a state. Biome is a large area characterised by it's vegetation, soil,climate, and wildlife. Ecosystem is a geographic area where plants, animals and other organisms exists

7 0
2 years ago
Which of the following is an environmental cost of agricultural
Sindrei [870]

A. More Crop Rotation

*B. Reduced Biodiversity*

C. Reduced Soil Erosion

D. More Cash Crop

4 0
3 years ago
Read 2 more answers
When the cat's amygdala is electrically stimulated the cat prepares to attack by hissing and arching its back. Which division of
myrzilka [38]

Answer:

Option-D

Explanation:

The network of neurons which gets activated in the condition of stress that is fear or anger is known as Sympathetic nervous system.  

During stress conditions, this system prepares the body physically and mentally either to fight or flight by controlling the production of hormones through activation of specific neuron network in the body. Mainly the adrenaline and norepinephrine which act and produces the response like increased heartbeat, sweating and other.

Thus, D)sympathetic is the correct answer.

7 0
3 years ago
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