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Orlov [11]
3 years ago
13

Which of the following statements is true? Evolution is like a ladder, with humans at the top and unicellular organisms at the b

ottom. Macroevolution cannot be observed directly. It is based on fossils and historical evidence. Human embryos do not share any characteristics or features with other vertebrate animal embryos. Evolution gives organisms what they need to survive.
Biology
2 answers:
NISA [10]3 years ago
6 0

Answer:

The answer is the one about macroevolution.

Explanation:

I took the test and its right, also if you google maceroevolution it'll give you the answer your looking for.

Colt1911 [192]3 years ago
5 0
<span>Macroevolution cannot be observed directly. It is based on fossils and historical evidence. </span>
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“blank” investigations are best for demonstrating cause-and-effect relationships. a. descriptive b.comparative c. experimental
FromTheMoon [43]

C. Experimental

Explanation - The cause and effect of a process would be studied in experimental investigations. However, in descriptive studies, relationship between the factors are not studies rather the detail of the process is studied. In comparative investigation, several factors are compared and its effects are analyzed.

In experimental investigations, experiments are carried out based on the hypothesis and then it is validated accordingly. Validation is a must to prove and disprove the hypothesis. Therefore, experimental data and hypothesis are related.

8 0
3 years ago
Sponges have no nerve tissue or sense organs.explain why this means that sponges have no cephalisation.
arlik [135]
Cephalization is the differentiation of end part of the body into a head in which nerve tissue is concentrated. Sponges have a very loose nervous system and their cells work individually, not controlled by a nervous system. Since they have no defined head as a consequence of concentrated nervous system, the sponges could not have cephalization either.
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3 years ago
What structure keeps food and water from entering the frog's lungs?
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Is called the Glottis. Hope this helps:)
7 0
3 years ago
Which best exemplifies the concept of neuroplasticity?
KonstantinChe [14]
The correct answer is "the formation of new brain cell connections as the result of reading a book".

Usually, neuroplasticity is apparent in young children when the central nervous system has an abundance of neurons. This is always in the context of forming new brain cell connections or synapses that will lead the person to access the information quicker. This also exemplifies the principle of use and disuse when it comes to knowledge. 

The other choices concerns the skeletal system, cardiovascular system, and the endocrine/reproductive system; all of which do not have a relation with neuroplasticity.
5 0
3 years ago
Is it possible to find the same gene in two different kinds of organisms but not find the protein that is produced from that gen
Deffense [45]

Answer:

Yes

Explanation:

This is made possible by latent genes, or genes in an unexpressed state.

6 0
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