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Gelneren [198K]
3 years ago
6

How do you think scientists figure out the life cycle of a star

Biology
1 answer:
Sauron [17]3 years ago
8 0

Answer:

space

Explanation:

they figured it out going to space and since a star is a small peice of the sun they can't touch it it's impossible without getting heat burns or dying so they ither observe a star using a telescope or went to space for days

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When we hear the word bacteria, we probably think of disease transmission or illness. But bacteria provide many
Rina8888 [55]

Answer:

A is the correct option

Explanation:

In the pharmaceutical industry, bacteria are used to produce antibiotics, vaccines, and medically-useful enzymes.

8 0
3 years ago
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What is the correct order of the following layers, from youngest to oldest?
raketka [301]

Answer:

I think

1 d

2

3

4

5 d

Explanation:

4 0
2 years ago
Chamges in blood are automatically and routinely made by the body In order to direct appropriate amounts of________and________to
Leviafan [203]

Answer:

What is Oxygen & Nutrients

Explanation:

Changes in blood are automatically and routinely made by the body In order to direct appropriate amounts of OXYGEN and NUTRIENTS to specific parts of the body.

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Miss Hawaii

3 0
3 years ago
There are 4 molecules moving across the membrane in this diagram. How many of
vladimir2022 [97]

Answer:

C) 3

Explanation:

So the one that has a group of three would be the Passive Transport the first one's effect would be Diffusion and the second and third are both together which will be Facilitated diffusion Hope this helps!

The rate of passive transport depends on the permeability of the cell membrane, which, in turn, depends on the organization and characteristics of the membrane lipids and proteins. The four main kinds of passive transport are simple diffusion, facilitated diffusion, filtration, and/or osmosis.

4 0
3 years ago
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The external urethral sphincter surrounds the external urethral orifice. is composed of smooth muscle fibers. opens before the i
Helen [10]

Answer:

The correct answer is: is controlled by the somatic nervous system.

Explanation:

The urethra is an organ that is part of the urinary system, and consists of a tube that connects the urinary bladder to the urinary meatus, which is important for the excretion of urine. The urethra has two sphincters, which are muscles with the function to control the exit of the urine: <u>the internal urethral sphincter and the external urethral sphincter</u>.

The external urethral sphincter, unlike the internal one that is composed of smooth muscle, is made of skeletal muscle and is controlled by the somatic nervous system - this is what makes urination voluntary. Being the most external sphincter, it opens after the internal urethral sphincter during the micturition reflex.

Any damage in either sphincter can produce incontinence.

5 0
3 years ago
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