BIOLOGY HIGH SCHOOL

Which of the following will lead to speciation? Select one of the options below as your answer:



A.
Variation in gene pool




B.
Lack of mutations




C.
Absence of natural selection

Answers

Answer 1
Answer: The correct answer is A. Variation in gene pool

Variations cause genetic drift and speciation while absence and lack of natural selection do quite the opposite, they keep us the same.

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A student drew models of an electromagnetic wave and a water wave. Which scientific question did the student MOST LIKELY ask to know how to draw these models? A. Do water waves travel at a slower speed than electromagnetic waves ? B. Can water waves and electromagnetic waves travel through different media? C. How do water waves and electromagnetic waves increase their amplitude ? D. Are water waves and electromagnetic waves examples of transverse waves ?

Answers

Answer:

answer is c

Explanation:

etc

How do plants on earth affect the amount of carbon in earth's atmosphere?

Answers

Plants absorb carbon dioxide during photosynthesis, reducing atmospheric carbon levels, playing a crucial role in regulating the Earth's carbon balance.

The impact of plants on atmospheric carbon levels is twofold. First, they act as carbon sinks by storing carbon within their tissues.

This stored carbon can include not only the carbohydrates produced during photosynthesis but also carbon within the plant's structure and roots. Over time, this stored carbon can accumulate, helping to reduce the concentration of CO2 in the atmosphere.

Second, plants release oxygen into the atmosphere during photosynthesis, which is crucial for the respiration of many organisms, including humans.

This exchange of CO2 for O2 in the atmosphere is a vital part of the carbon cycle, which influences the Earth's climate.

Furthermore, when plants die and decompose or are consumed by herbivores, some of the stored carbon is released back into the atmosphere as CO2 through processes like respiration and decomposition.

However, a portion of the carbon can also be stored in the soil, contributing to long-term carbon sequestration.

plants on Earth help regulate the amount of carbon in the atmosphere by acting as carbon sinks during photosynthesis and releasing oxygen. Their role in the carbon cycle is crucial for maintaining the Earth's climate and ecosystem balance.

For such a more question on photosynthesis                                                                                                                                                                        

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They reduce it during photosynthesis, and output more oxygen.

Why does DNA replication have such accuracy ?

Answers

Because human DNA is so very long (with up to 80 million base pairs in a chromosome) it unzips at multiple places along its length so that the replication process is going on simultaneously and more accurately.

During gym class, Raul walks briskly for a half hour. Jenna decides to sprint and run the bleachers for the same amount of time.Which statement best compares the cellular processes occurring in each student during this time?

Answers

in the time that raul is walking and jenna is running, jenna is getting more energy out of her system since she is working at a faster pace.

If you rubbed a piece of topaz against a piece of Quartz, what would happen?

Answers

The Quartz would be scratched. 
well it will do nothing

During meiosis, the "shuffling" exchange of genetic material is calleda. crossing-over.
b. synapsis.
c. allele distribution.
d. tetrad formation.

Answers

a. crossing-over
In crossing over, the genes bind against each other and this creates genetic diversity in meiosis. 

Hope this helps :)
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