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PIT_PIT [208]
3 years ago
13

At the end of which period on the geological time scale did the dinosaurs become extinct? A. Jurassic B. Quaternary C. Cretaceou

s D. Tertiary
Biology
2 answers:
matrenka [14]3 years ago
7 0
<span>Hey, Rockstar2405!The dinosaurs become extinct in the Cretaceous Period. I <span>hope this helps;)</span></span>
pychu [463]3 years ago
5 0
(C. The dinosaurs became extinct after the Cretaceous time period, after living on Earth for about 165 Million Years
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which of the following of mandels conclusions is a necessary foundation for Darwin's theory of natural selection
Kisachek [45]
Hey there!

Your answer is:

There are alternate versions of a gene.

Hope this helps!
Have a great day! (:
4 0
3 years ago
Read 2 more answers
An experiment is designed to determine if wheat grows better when it is planted alone or with clover. The design calls for 3 pan
Viktor [21]

Answer: Option B

Explanation:

Usually in scientific experiments, at least one parameter is checked; here, the growth rate of wheat in two different conditions is being evaluated.

Hence, growth rate of wheat alone in pans A, B and C becomes the standard or referential control against which the experimental control (Wheat + clover) in pans D, E and F is evaluated, since both treatments are exposed to the same external conditions.

I hope this helps

4 0
3 years ago
Over 1,800 mutations have been described within the CFTR gene. These mutations can be readily detected using PCR and DNA sequenc
sertanlavr [38]

Answer:

The correct answer is - option C.

Explanation:

CFTR is a short form of cystic fibrosis transmembrane conductance regulator protein which is caused by a recessive mutation in this protein. This mutation results in the accumulation of mucus in secretory organs.

As the disease is a recessive disease, for the mutant phenotype to expressed both copies of the allele required to be recessive.

The mother is negative for the CFTR. Hence, she will not transfer the mutant allele to her child So, the child would have a wild-type phenotype even if the father having two copies of recessive allele.

Thus, the correct answer is - option C.

8 0
3 years ago
Which of the following statements is false?
Rufina [12.5K]

Answer:

D

Explanation:

Carbon is expelled not used for producing sugars or any of that

3 0
2 years ago
What have scientists determined forms and shapes land masses here on Earth?
salantis [7]

C

A Land mass is large geographical area that is surrounded by oceans. Therefore this can be synonymous to continents.

Explanation:

The crust is divided into tectonic plates that are dynamic because they move on top of the semi-plastic mantle.  The movement of the tectonic plates is driven by the convection currents of the mantle that drag along the crust above.  The tectonic plates collide at convergent boundaries where tectonic plates are consumed as one is subsided into the mantle. On the other hand, new crust is formed at divergent boundaries where two tectonic plates move away from each other and magma rises from the mantle and cools into new crust.

The convection  currents occurs because the lower mantle is hotter and less dense compared to the cooler denser upper mantle. Therefore the upper mantle always tends to sink as the lower mantle rises. These convection currents are the same as in any other fluids that are disproportionately heated.

Learn More:

brainly.com/question/7667599

#LearnWithBrainly

8 0
3 years ago
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