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Papessa [141]
2 years ago
15

For photosynthetic organisms to evolve and become more abundant than chemosynthetic organisms, what variable must have changed i

n the environment of ancient earth? carbon dioxide must have become more abundant. nitrogen must have become more abundant in the atmosphere. oxygen must have become more abundant. endosymbiosis needed to occur between a smaller prokaryote and a larger prokaryote.
Biology
1 answer:
ValentinkaMS [17]2 years ago
8 0
The evolution of organisms are based on the resources available in order for it to be capable of growth still. In the given choices above, the substance or chemical that changed over time is the supply of carbon dioxide which is an essential substance for photosynthesis. Thus, the answer the first choice. 
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Imagine that you live in the midlatitudes—say, Virginia—and a cyclone passes by. What is the correct sequence of events?
Bas_tet [7]

Answer:

First a warm front then a cold front.

Explanation:

Cyclone may be defined as the amount of the large air and move around the area that has low atmospheric pressure. The cyclone can cause the large disturbances to the living organisms.

The cyclone formation occurs at the low polar vertices. The two main types of front are related to the cyclone. The warm front first form for the air movement. This warm front is later replaced by the formation of the cold front of that cyclone.

Thus, the correct answer is option (3).

4 0
2 years ago
In part A, you analyzed genes that contribute to two diseases. How can scientists use this information to develop new treatments
Sergeeva-Olga [200]

Answer:

Yes scientist will need to develop multiple treatments to control symptoms.

Explanation:

because if they only do one treatment it may not work for everyone because some people could be allergic to that one treatment that's why there are multiple treatments.

8 0
3 years ago
What is the correct sequence of events along an axon that follows a membrane reaching threshold potential? 1. The membrane depol
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2 1 4 3 i hope it helps
3 0
3 years ago
Which of the following is/are true?
dem82 [27]

Answer: option B) Sympatric speciation is best described as a random event that disrupts the allele frequencies in a population

Explanation:

Sympatric speciation is an event/situation whereby organisms of the same species:

- live in the same territory or nearby territories ( i.e do not live in geographical isolation)

- DO NOT interbreed, but select a sexual mate from a much diverse territory to yield new species or offsprings.

This sexual selection then results in generations of offsprings that are genetically different from the rest of the same species due to uneven gene flow or disruption of alleles among the population of same species.

Thus, only option B is true.

4 0
2 years ago
A large area undergoes the same amount of metamorphism. All rock reach the same metamorphism grade. However, after the metamorph
Mrrafil [7]

The only explanation in this situation is that the parent rocks of the marble and slate were different. This indicates that the region once held both shale and limestone before metamorphism.

In reference to rocks, it denotes those that have undergone metamorphism—rocks that may have started as sedimentary, igneous, or another type of metamorphic rock but has since undergone "recrystallization" and taken on an entirely new form—under new temperature and pressure conditions.

For instance, when limestone is heated and compressed, it changes into marble, a more coarsely crystalline and occasionally banded rock.

When shale, a clay-rich, soft rock, is compressed, slate, a tougher rock, is created.

The alterations are frequently even more remarkable, resulting in the formation of new minerals, including garnet, mica, and tourmaline (as seen in schist).

To know more about metamorphism click here

brainly.com/question/19930528

#SPJ4

4 0
2 years ago
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