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Gnom [1K]
3 years ago
7

Why do we have 5 fingers not four or six,etc.?

Biology
1 answer:
VikaD [51]3 years ago
8 0

Answer: The literal reason would be because our ancestors did. The ancestors of all modern mammals had five digits on each limb up to 360 million years ago.

Explanation:

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what is the subdivision of the peripheral nervous system that connects to sensory receptors and to skeletal muscles called
vampirchik [111]

Answer:

The somatic nervous system

Explanation:

The peripheral nervous system is categorized into two types: the autonomic and somatic nervous system.

The somatic nervous system controls the voluntary actions of the boys so is also known as the voluntary nervous system and the voluntary system involves the skeletal muscles therefore is also known as the skeletal nervous system.

The skeletal nervous system contains two types of neurons called the afferent neurons which carries the sensory input from the muscle to the CNS ans the efferent neurons which brings the impulse from the CNS to the muscles.

Thus, the somatic nervous system is the correct answer.

7 0
3 years ago
A field biologist observed and recorded the ground squirrel population in a forest ecosystem over a 40 year period. During which
nordsb [41]
The answer will be B
6 0
3 years ago
I REALLY NEED I JUST HAVE TO DO TWO MORE STUFF TO FINISH SCIENCE BUT I STILL NEED TO ALGEBRA I HAVE UNTIL FRIDAY TO FINISH SCIEN
ludmilkaskok [199]
We know that oil floats on water and do not mix
<span>
What happens to the oil when you first pour it in? It flows into the water, but then seperates.

Why does this happen? oil is lighter than water and the molecules of the oil are attracted to the other oil molecules, not water, the water molecules the same

What kinds of animals would be most affected by an oil spill at the beginning? animals that live their lives near the surface of the ocean. Why? because now the water that was clear and free-flowing is now dark and sticky. oil also changes the way how some animals survive so make their ways less effective. one example are birds like pelicans

Use a spoon to stir the oil for 30 seconds.


Answer the following questions:
What natural action stirs the real ocean? ocean currents caused by wind and the earth's roation
What happened to the oil? went back to the top
Even if you can’t see it, is all the oil still in your ocean? yes
Which animals in the ocean become affected after wave and current action causes some of the oil to settle to the bottom, or be absorbed into the water?  bottom-feeders
Add a splash of dish detergent to the mixture and stir.


Answer the following questions:
What happened to the oil? it mixed with the water Is it all still in the ocean? yes
Sometimes cleanup efforts involve dumping a soap mixture over a spill area. Why is this done? to bond the oil to the detergent and the detergent to the water. so they can grab all the oil
What might be a negative effect of dumping the soap?</span> soap has chemicals that could upset the ballance of the ecosystem and kil some animals/plants

5 0
3 years ago
How does pressure relate to force
stepladder [879]

Answer:

Pressure is simply the force experienced by an object divided by the area of the surface on which the force acts. Note that the force here is the force acting perpendicular to the surface. The unit for pressure is the pascal, Pa.

Explanation:

8 0
2 years ago
Seed _____ is when enzymes and other chemicals are activated and energy is produced to start cell division.
Ksenya-84 [330]
(D)Germination is your answer..........
7 0
2 years ago
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