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tester [92]
4 years ago
11

Which type of skeletons do invertebrates such as crabs have? A. endoskeleton B. exoskeleton C. articulated D. arthropoidal

Biology
2 answers:
r-ruslan [8.4K]4 years ago
7 0
B they have an exoskeleton
Firdavs [7]4 years ago
6 0
I think it’s Exoskeleton
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What are genes? Question 3 options: A the observable characteristic B the expressed trait C the basic unit of inheritance D the
Nonamiya [84]

Answer:

I guess it is C.

Explanation:

Because a gene is the basic unit of heredity that determines a offspring's characteristic, my guess is that the answer is C

(Hope this helped!)

7 0
3 years ago
How has plant and animal breeding affected humankind and genetics?
Anika [276]
On the downside, certain exaggerated animal traits produced through selective breeding may make it difficult for the animal to live a normal life, and plants propagated through selective breeding may be prone to disease.
5 0
3 years ago
A biologist is studying the possible role of earthworms on the fertility of farm soils. As part of this research, the number of
dimaraw [331]

Answer:

Taking more samples from different parts of an acre.

Explanation:

Validity and accuracy of the data is crucial for any serious research. In this particular case, the most accurate data would be obtained if earthworms would be counted on the whole acre. Of course, this would consume lot of time, people, money etc. That's why methods for estimation are used. Estimation best works with large number of samples. Since one acre equals over 4000 square meters, taking only five samples from such a big area is simply not enough for obtaining valid data.

One of the possible ways to improve estimation is to take more samples per acre while avoiding taking adjacent samples because it could be possible that number of earthworms in one part of an acre is increased (or decreased) for any reason, which would lead us to wrong conclusion.

8 0
3 years ago
What economic method is often used to guide policy makers in making pollution regulations?
saul85 [17]
Hello,

Here is your answer:

The proper answer to this question is option A "determining point of diminishing returns"! That because the government uses that to get taxes back!

Your answer is A!

If you need any ore help feel free to ask me!

Hope this helps!
3 0
3 years ago
Read 2 more answers
Translation and protein synthesis is occurring at the ribosome. If the tRNA anticodon being matched at the ribosome is AUG, what
Bas_tet [7]

Answer:

The correct answer would be - option D) UAC.

Explanation:

By the process of the translation mRNA turns into protein as mRNA is considered as blueprint of the protein. During translation tRNA contains anti-codons or amino acid this anti-codon is correspond to the codon of mRNA.

The anticodon of tRNA which is present at the accept site or anticodon of tRNA molecule is complementary to the codon present in the mRNA which means A pairs with U and G pairs with C only.

Thus, the correct answer would be - option D) UAC.

8 0
3 years ago
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