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MaRussiya [10]
3 years ago
6

Based on the current model of evolutionary history, the first living cells to evolve on earth were A) bacteria. B) eukaryotes. C

) fungi. D) protist.
Biology
2 answers:
DIA [1.3K]3 years ago
8 0

Answer: A). bacteria

The first living cells to evolve on earth were single celled bacteria. These single celled organisms developed specialized structures to trap sunlight energy and to carry out photosynthesis e.g mitochondria, chloroplasts and lead to the development of multicellular organisms known as plants which are included in eukaryotes. All these changes have been found in fossil records of primitive organisms.

Pani-rosa [81]3 years ago
6 0
The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.
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The leaf surface area is just as, if not more, important than the intensity of light in photosynthesis.
nikdorinn [45]
The answer is a. True.

The photosynthesis occurs in leaves, which absorb sunlight. But the amount of absorbed sunlight by leaves depends on both the leaf surface area and intensity of life. So, t<span>he leaf surface area is just as important as the intensity of light in photosynthesis. But, if we take into consideration other leaves' functions, such as gas exchange, then the intensity of light has no effect on it. Thus, in that case, the leaf surface area is more </span><span>important than the intensity of light.</span>
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3 years ago
Read 2 more answers
Scientists hypothesize that prokaryotes evolved before eukaryotes because
DiKsa [7]

Answer: e. prokaryotic cells lack nuclei.

Explanation: Prokaryotes are unicellular (single-cell) organisms that lack well developed cell internal membrane-bound structures or organelles. They do not have a nucleus but generally, they have a single chromosome that possess a double-stranded DNA located in an area of the cell called the nucleoid. Most prokaryotes have a cell wall outside the plasma membrane.

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3 years ago
How to gain teens trust for medical reasons?
wolverine [178]
Become there friends and gain there trust by expressing your personal experiences
8 0
3 years ago
The town council wanted to beautify the streets by planting trees along the curbs in front of houses whose trees had died, Melin
Flura [38]

Answer:

The options

A. Comma splice

B. Fused sentence

The CORRECT ANSWER IS A.

A. Comma splice

Explanation:

In English grammar, a comma splice can also be called a comma fault.

It occurs when the comma is uesd to join two independent clauses or complete sentences with a comma and no conjunction.

This form of writing is often used in literary writing to portrait a certain mood of informality.

A comma splices can be corrected in three varying ways such as:

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6 0
3 years ago
What is a difference between systemic and pulmonary circulation
serious [3.7K]

<u>Answer</u>:

The difference between systemic and pulmonary circulation is the Systemic circulation carries the blood between to the heart and body and the pulmonary circulation carries blood  between the lungs and the heart.

<u>Explanation</u>:

Circulation of blood is of two types:  

The systemic circulation and The pulmonary circulation.  

The Systemic circulation carries the oxygenated blood from heart to the body through the arteries (aorta) and also carries back the deoxygenated blood from the body to the heart through veins (superior vena cava) and pulmonary circulation carries deoxygenated blood to the lungs from the heart and from the lungs to the heart.

In Pulmonary circulation the pulmonary artery is used to carry the deoxygenated blood to the lungs and the pulmonary vein is used to carry oxygenated blood to the heart from the lungs.      

6 0
4 years ago
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