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nydimaria [60]
3 years ago
14

Which statement is true for chordate nerve cord?

Biology
1 answer:
amm18123 years ago
3 0
Chordates (phylum Chordata) are animals which are either vertebrates or one of several closely related invertebrates. They are united by having, for at least some period of their life cycle, a notochord, a HOLLOW DORSAL NERVE CORD
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HELP ASAP!!!! All life on earth has descended from a common ancestor this theory was accepted when
kap26 [50]

Answer:

A. A majority of scientists agreed with it

Explanation:

The famous theory called the theory of common descent, states that all the living organisms of the earth have arisen from a common ancestor. This notion was first proposed by a French mathematician,Louis Maupertuis duirng 1740s who was of the view that all organisms had a single ancestor and evolutionary process with the passage of time resulted in the specie diversification.

After that, in 1790s another philosopher Immanuel Kant, suggested that all organisms seem to have a common ancestor. In the same period of 1790s, another scientist , Erasmus Darwin who was the grandfather of Charles Darwin also suggested that all the organisms might have a single ancestor who went through the process of evolution to bring all the majesty into life.

Charles Darwin was the first scientist who worked on this notion for alot of time and proposed the theory of common descent,in his book, On the Origin of Species.

After it, many scientists got agree with this theory such as,  Vernon Kellogg in 1907 and T. Ryan Gregory in 2008 and many others explain that no reliable observations exists which contradicts the theory of common descent.

Therefore, option A is the best option.

Hope it helps!

4 0
3 years ago
How many times would Earth rotate on its axis during one revolution of the sun?
Xelga [282]

The Earth will perform 366.25 rotations per revolution about the Sun.

<h3>What is Revolution?</h3>

This is defined as the motion around the Sun along its orbit which is common with planets such as the Earth.

The Earth rotates 366.25 times around the Sun and which is equivalent to a calendar year which is used for time keeping.

Read more about Revolution here brainly.com/question/16533738

8 0
2 years ago
The leading causes of death in middle age are __________ and __________. cancer; cardiovascular disease motor vehicle collisions
Darya [45]
The correct answers are "cardiovascular diseases and cancer."

Cardiovascular diseases is a classification of illnesses that involves the heart and the blood vessels of the body, which may sometimes lead to a heart attack. While cancer is described as an abnormal cell growth inside the body of a person causing an invasion of a specific part or organ of the body, which may also spread if not treated well. The most common cancer for men is the prostate cancer, on the other hand, the common cancer seen in females is breast cancer.
7 0
3 years ago
PLEASE HELP ME ASAP
Oduvanchick [21]

Answer:

Evaporation

Explanation:

*-*-*-*-**-*-*-*-*-*-*

When the sun gets hot, water from any lakes, oceans, rivers, or any part with a large body of water evaporates.

This means that water turns into a gas form called "water vapor" that rises into the atmosphere.

Hope this helps <3

3 0
2 years ago
Read 2 more answers
Which of the following disorders results from changes in an individual gene?
adoni [48]
I'm pretty sure the answer is: B. Sickle-cell disease
6 0
3 years ago
Read 2 more answers
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