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Zanzabum
2 years ago
7

Describe the similarities and differences in the way humans and insects obtain oxygen.

Biology
1 answer:
Molodets [167]2 years ago
4 0

Answer:

There are many ways.

Explanation:

Humans have a combined respiratory and circulatory system, whereas insects do not. In humans, the air is brought in through the mouth/nose, through the windpipe, and into the lungs, the oxygen is absorbed into the bloodstream where it can be transported to muscles and organs. However, insects take in air through tiny holes in their thorax and abdomen. These are called spiracles. The oxygen is stored in many dorsal air sacs to be used. Then carbon dioxide is expelled through the spiracles.

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Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive. Which Punnett square sho
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Only a Punnet square with one homogeneous dominant would produce 100% dominant trait offspring.
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A man catches a disease. The man has not been immunised against this disease. A doctor gives the man a course of antibiotics. Fi
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Answer: To kill the bacteria causing the illness

Explanation:

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If it is not, the bacteria can regain strength and start causing sickness again except this time, it may grow an immunity to the antibiotics which means that an even stronger dosage of antibiotics will be needed.

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What type of problems do high school STEM programs teach students to solve?
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b

Explanation:

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3 years ago
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__ is the study of temperature, humidity, pressure, and other variables and producing charts and graphs.
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3 years ago
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What does 7263×27 equal
dezoksy [38]

Since it is easily calculated using a calculator, I assume you need this done in the head.

Yes, you can do that.

It takes a few words to explain this, but if you understand how this is done, it goes fast.


27=3*9

so 7263*27 = (7263 * 3) * 9

so first multiply 7263 by 3.

72*3=216, 63*3=189

so 3*7263=21789

So far so good.

Now you can multiply anything by nine by subtracting from the right neighbour, starting from the right.

For example, 27*9. the right neighbour of 7 is 0, borrow 1, so 10-7=3

the right neighbour of 2 is 7, but we borrowed 1, so 6. 6-2=4

At the beginning of the number 27, we add a zero which we subtract from the right neighbour 2 to get 2.

So 27*9=243.

Now for 21789, we have successively

(10)-9=1

8-8=0 (9 was borrowed to become 8)

8-7=1

7-1=6

(11)-2=9

and finally

1 -0 = 1 (2 was borrowed to become 1)

So the final answer is 196101

6 0
3 years ago
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