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julsineya [31]
3 years ago
7

How many animal species are there in the world?

Biology
1 answer:
fiasKO [112]3 years ago
6 0
There is an estimated amount of 2MIL to about 50MIL total! New animals are born every 5-10 seconds! (plz mark as branliest)
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Nicotinic receptors a. are found at neuroeffector junctions of the parasympathetic nervous system. b. respond to epinephrine. c.
Verizon [17]

Answer:

Option C, open chemically gated sodium ion channels.

Explanation:

The nicotinic receptors are present on the muscle cell membrane. These receptors belong to the class of cholinergic receptor which binds to the acetylcholine and opens the gated channel to allow transfusion of cation through it. These actions of the receptors are stimulated by the neurotransmitter. Nicotinic receptors are very fast at acting and hence are more prevalent at the neuromuscular junction.

Hence, option  C is correct

 

5 0
3 years ago
What is microbiology
Leona [35]
Microbiology is the study of microscopic organisms, such as bacteria, viruses, archaea, fungi and protozoa. This discipline includes fundamental research on the biochemistry, physiology, cell biology, ecology, evolution and clinical aspects of microorganisms, including the host response to these agents.
3 0
3 years ago
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Florida has about 1200 miles of these narrow strips of land where the land meets the ocean or other bodies of water.
UkoKoshka [18]

Answer:

<h3>The land meet the ocean which is part of other bodies of water.</h3>

Explanation:

8 0
3 years ago
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You can make a scary face by grabbing your bottom lip with your top teeth. When you do this, your mandible moves in an anterior
saw5 [17]

Answer:

Retraction.

Explanation:

When someone suffers from lower eyelid retraction, it means that their lower eyelid has actually been pulled downward which is an example of a scary face.

Another example is by grabbing your bottom lip with your top teeth. When you do this, your mandible moves in an anterior direction.

5 0
3 years ago
Unlike an animals habitat, an animals niche can be described by all of the following except
xxTIMURxx [149]
Salutations!

Unlike an animals habitat, an animals niche can be described by all of the following except --------

Unlike an animals habitat, an animals niche can be described by all of the following except the way the organism obtain when it needs to survive.

Hope I helped
8 0
3 years ago
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