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Sedaia [141]
3 years ago
14

How can the Earth be a closed system if space shuttles can leave the

Biology
2 answers:
Tpy6a [65]3 years ago
8 0

Answer:

Because it takes tremendous effort to break free from the laws of gravity to exit the Earth's atmosphere.

Explanation:

the explanation is in the answer.

gtnhenbr [62]3 years ago
6 0

Answer:

The answer is- A). Because it takes tremendous effort to break free from the laws of gravity to exit the Earth's atmosphere.

Explanation:

I really don't have an explanation. Except that I love science and I actually pay attention in my classes.

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Carbohydrates are made up of carbon, hydrogen, and ______.
jasenka [17]
Oxygen.
Hope it helps!
3 0
3 years ago
Read 2 more answers
How oxygen produced??​
Liula [17]

Answer :

Plants take in carbon dioxide from the atmosphere, water from the soil and light energy from Sun.

Photosynthesis occurs.

Oxygen and energy are produced.

There are 21% of oxygen in the atmosphere.

3 0
3 years ago
Read 2 more answers
A client with suspected myasthenia gravis is to undergo a test with edrophonium. the client asks if edrophonium can be used to t
olga nikolaevna [1]

The correct answer is: the short half-life of edrophonium makes it impractical for long-term.

Edrophonium is used for the diagnostic of myasthenia gravis. In patient with myasthenia gravis, the body produces autoantibodies which inhibit nicotinic acetylcholine receptors in the neuromuscular junction. Edrophonium, on the other hand, is acetylcholinesterase inhibitor which blocks the effect of acetylcholinesterase enzymes (AcH stays in synaptic cleft).

Substitution for the edrophonium is pyridostigmine which is also acetylcholinesterase inhibitor but with long-term maintenance.


6 0
3 years ago
When a spoon tarnishes this type of chage has occurred?
Contact [7]
I think its rest because it tarnishes so witch means dullness of color; loss of brightness according to the dictionary and when something rest it loses color and becomes a copper brown color 
4 0
3 years ago
The most common form of color blindness, known as red–green blindness, is an X-linked recessive trait affecting about 8% of the
dangina [55]

Answer:

A) Proportion of females with the trait is less than 8%

B) Proportion of females that would be carriers is greater than 8%

Explanation:

Only the 8% male sufferers can give their diseased X-chromosome for the female XX to be formed. hence, the proportion of the female carriers is most likely greater than 8%

On the other hand, the proportion of female sufferers will be definitely less than 8%, for 92% of the remaining male population are neither carriers nor sufferers; and the 8% male sufferers are strictly needed to give the disease X-chromosome for a female to have the trait XX.

5 0
3 years ago
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