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Elodia [21]
3 years ago
5

All of the following are sources of air pollution, EXCEPT

Biology
2 answers:
san4es73 [151]3 years ago
8 0
B is the correct answer.
forsale [732]3 years ago
7 0

The correct answer is B) Heavy metals such as mercury.

Explanation:

Heavy metals such as mercury or lead are denser than regular metals, this causes it is common for these metals to be found in the surface of Earth rather than in the air or atmosphere. Indeed, mercury and other similar metals are extracted from the Earth's crust and then used for different purposes. As a result of this, mercury ends up in the surface of Earth or in water sources which causes soil or water pollution. This means mercury is not a common source of air pollution; on the opposite other such as CFCs, nitrogen oxides and smog remain in the air and therefore are sources of air pollution.

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A particular diploid plant species has 48 chromosomes, or two sets. A mutationoccurs and gametes with 48 chromosomes are produce
PilotLPTM [1.2K]

Answer:

The zygote will have 96 chromosomes.

Explanation:

If self-fertilization occurs, and two gametes (each having 48 chromosomes) unite, the zygote will have 96 chromosomes ( or 4 sets)

6 0
3 years ago
What happens to the number of particles in the sample
Verdich [7]
These question makes no sense

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3 0
3 years ago
Which global water rights issue does the tippy tap technology help solve?
Mashutka [201]

Answer:

a. lack of running water

Explanation:

The Tippy tap technology was invented to solve the issue of running water problem. This technology is designed mainly for hand washing and it is used in the rural area to solve the running water problem.

This technology technique needs only forty milliliters of water; it is less expensive and reduces the chance of transmitting diseases as the user only touches a bar of soap suspended by a string.

8 0
3 years ago
Question 2 of 9
Jlenok [28]

Answer:

The correct answer is option D.  Light and some other factors are necessary for chlorophyll production

Explanation:

By this experiment, it is clear that light is the major factor that helps in the production of chlorophyll in seedlings or plants. In this study, placing the seeds in the light turns 75 seedlings green which is possible by the production of the green pigment, chlorophyll only. So, it is proved that light is a key factor in the production of chlorophyll.

Besides light, there must be some other factors (mineral nutrition and chemical metabolites) that also play role in the production of chlorophyll or increase or decrease of the chlorophyll production as few seedlings did not turn green in the study.

8 0
3 years ago
What happens to the composition of the rock during physical weathering? Give an example.
Nutka1998 [239]
Physical Weathering in Nature. When water in a river or stream moves quickly, it can lift up rocks from the bottom of that body of water. When the rocks drop back down they bump into other rocks, and tiny pieces of the rocks can break apart. Many rock surfaces have small crevices on them.

Ex: Unloading.
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3 years ago
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