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daser333 [38]
3 years ago
11

Which statement is true about Earth′s layers?

Biology
2 answers:
Arada [10]3 years ago
8 0

Answer: A.

Explanation:

blondinia [14]3 years ago
3 0

Answer: The Answer Would Be <u>A.</u>

The crust is the least dense layer.

Explanation:

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Climax communities occur before communities that are undergoing primary succession
slega [8]

Answer:

Answer is C. Climax community is an ecological community that has reached the final stage of ecological succession.

Explanation:

At this point bio-diversity is maximum and no further changes take place. It is the most stable period.

6 0
3 years ago
Someone please help me
Aleks [24]
I would pick H but it might be J but I am pretty sure it is H so go with that ok if you need any thing else I will help you ok
7 0
3 years ago
In patients with emphysema, what is the main stimulus of respiratory regulation?
Vlad1618 [11]
Hey there,
The answer is <span>high CO2 levels in the CSF.

Hope this helps :))

~Top
</span>
4 0
3 years ago
How does the basic structure of a steroid differ from other macromolecules such as carbohydrates?
oksian1 [2.3K]
The basic structure of a steroid differ from other macromolecules such as carbohydrates by having a four ring structure whereas a carbohydrate do not have. A steroid is a group of organic substances which has four rings that are arranged in a certain configuration. Examples are testosterone, estradiol and lipid cholesterol. It will always have seventeen carbon atoms in its structure. Carbohydrates, on the other hand, are a group of organic substances that consist carbon, hydrogen and oxygen atoms typically in a 2:1 ratio of the hydrogen and oxygen atoms. So, it would have an empirical formula of Cx(H2O)y.
3 0
3 years ago
Which of the descriptions below does not explain the effects of air pollution on the respiratory system?
NeTakaya
I believe that the best answer among the choices provided by the question is <span>It could increase carbon dioxide uptake in alveolar sacs.</span>
Hope my answer would be a great help for you.    If you have more questions feel free to ask here at Brainly.
7 0
3 years ago
Read 2 more answers
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