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muminat
3 years ago
6

What kind of atmosphere do the inner planets have?

Biology
1 answer:
iren2701 [21]3 years ago
7 0

Answer:B

Explanation:because mercury has a very thin atmosphere.

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if an element has a half-life of 30 million years and there is 12.5% of it remaining in a rock, how old is that rock
Assoli18 [71]

Answer:

The half-life of a substance is the amount of time it takes for half of that substance to decay. However, after two half-lives, half of the half remaining will decay, leaving you with one quarter of the original substance.

So, after 1 million years you will have 50% of the original substance remaining.

And, after 2 million years you will have 25% of the original substance remaining.

After 3 million years you will have 12.5% of the original substance remaining.

And after 4 million years you will have 6.25% of the original substance remaining.

Explanation:

Hope it helps:)

3 0
3 years ago
Choose all the answers that apply.
icang [17]
The 3rd,4th, and 5th are correct.
7 0
3 years ago
Read 2 more answers
1. An enzyme is considered a(n) ____ because it speeds up a chemical reaction without being used up.2. In a catalyzed reaction,
Zepler [3.9K]

Answer:

(1)Catalyst, (2) substrate, (3) active site, (4)activation energy, (5)induced fit, (6)cofactor, (7)denature

Explanation:

An example of an enzyme is carbonic anhydrase. It catalyzes the reversible reaction between water and carbon dioxide, in the body, to form carbonic acid. This reaction would normally be very slow but is sped up in the body. This allows the body to regulate the pH of the blood and also helps gets rid of carbon dioxide from the tissues.

8 0
3 years ago
Read 2 more answers
A high school biology teacher asks her students to collect daily rainfall amounts at each of their homes during the summer. The
Alex777 [14]
Below are the choices:

<span>a. creating an online chat group for asking questions and posting solutions
b. establishing a standard method for delivering the results to the teacher
c. offering a wide variety of rain gauges for everyone to choose from
d. using a standard unit of measure for the duration of the study
</span>
the answer is D. I hope it helps. 
5 0
3 years ago
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7. All the recolonizing species are autotrophs. How do they get their energy?
Tresset [83]

7. The correct answer is photosynthesis.

Autotrophs are organisms which produce food for themselves-from simple to complex molecules. In the case of photosynthesis, producers (plants or some algae) use the light energy to produce complex organic compounds (carbohydrates, fats, and proteins).

8. The correct answer is primary consumers.

Since the pioneer species are usually autotrophs because there is no other source of energy except light energy in the early stages of succession (after the eruption). Most likely, the primary consumer will appear next because they feed upon producers.

9. The correct answer is: they are different populations of fish.

Those two different kinds of fish have unique adaptations that enable them to survive and live in distinct environments. It is most likely that molecular changes underlie adaptation and speciation of those fishes.


8 0
3 years ago
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