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mars1129 [50]
4 years ago
6

Why does the heart need so many parts?

Biology
1 answer:
Hunter-Best [27]4 years ago
5 0
Each part of the heart is responsible for a certian aspect of how you live-- your blood (pumped through your heart) oxygenates your blood, and ensures that has the nutrients you need to survive. It also carries away waste.  Without each of these intricate pieces, you wouldn't be able to survive.
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describe how a student could use a microscope to compare the size of frog skin cells to the size of human skin cells.
Serga [27]
<span>The use of the fine lens and the light source.

A light microscope uses focused light and lenses to magnify an object. Light microscopes come in several forms. (1) Simple light microscopes use a single lens to magnify an object and cannot reach high magnification just like a handheld lens whose highest clear magnification in the best conditions is 25x. (2) Compound light microscopes use two sets of lenses - an objective lens and an eye piece. This is the type of light microscope whose magnification power reaches between 1000x and 2000x.</span>
8 0
4 years ago
Which is a function of the central nervous system? A. pumping blood through the body B. controlling coordination in the body C.
Liono4ka [1.6K]
The answer is the second choice B.
8 0
3 years ago
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Ignoring migration, the age structure of a human population likely to increase in size will have what shape? a) pyramidb) invert
goldfiish [28.3K]

Ignoring migration, the age structure of a human population likely to increase in size will have pyramid shape.

Answer: Option A

<u>Explanation:</u>

The general development of the human population has been expanding quickly in the course of recent years. Be that as it may, population development isn't the equivalent starting with one nation then onto the next.

Government pioneers are intrigued to know future patterns in their countries' populations and their age structures to help envision up and coming needs and utilization of assets.

This clarifies the significance that numerous nations place on leading an exact evaluation of the population. In this action, they examine age-structure outlines that help governments and worldwide offices decide future population patterns and needs .

5 0
3 years ago
Help please!
Romashka-Z-Leto [24]
Yes, beetles can adapt to almost any environment. they are usually found where they eat, and some species help get rid of garbage, dead plants and even help pollenate flowers. however red beetles feed off of lily’s(i think?), so they feed off of those flowers and if you see them your lilies may be at risk.
4 0
3 years ago
Which of following processes is the function of the smooth muscle layer of the digestive system? a) Ingestionb) Secretionc) Mixi
lakkis [162]

The answer is "none of the above".

The smooth muscle is responsible for movement of food by peristalsis and mechanical digestion by segmentation.

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3 years ago
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