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Helga [31]
2 years ago
8

Please help this is due in an hour! ill give brainliest and 20 pts!

Biology
1 answer:
Elan Coil [88]2 years ago
4 0

Answer:

Water contamination is caused by waste water from industrial or chemical processes in enterprises. Chemical substances that are easily recognizable in industrial waste water are common. Toxic wastes and organic pollutants are the most common sources of water pollution, which are concentrated in a few subsectors.

Explanation:

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Establish a relationship between the systems, bone and muscle, that is, how the two systems must necessarily act together.
wolverine [178]

Answer:

Our bones support us and allow us to move. Muscles pull on the joints, allowing us to move. Our bones help hold our bodies in place. They need eachtoher. The muscles need the bones for stability.

Explanation:

7 0
3 years ago
Earth makes one revolution every _____. A. 12 hours B. 24 hours C. 6 months D. 365 days
cluponka [151]

Answer:

D. 365 days

Explanation:

Revolution means covering distance and moving around the sun so it takes a year or 365 days revoluting around the sun.

7 0
3 years ago
Which of the following distinguishes why deer populations have increased?
miskamm [114]

Answer:

The most correct option is the first option

Explanation:

A deer is an herbivorous animal that is usually preyed upon by many wild carnivorous animals like lions, tigers and leopards. Hence, when the population of these wild predatory carnivorous animals reduce, the population of the deer would increase because fewer of them would them would be killed by predators despite them (the deers) reproducing.

Note that a predator is an animal that feeds upon another animal (referred to as prey) of lower "strength".

3 0
3 years ago
Mutations in dna sites such as promoters and operators can act only in cis
a_sh-v [17]
This is true.
An easy way to remember this is that Cis-acting elements are physically linked to a set of structural genes. So promoters and operators are physically linked to the gene they express. They are cis acting because they are on the same strand as the structural gene they control.

On the other side, trans means that they can come from somewhere else and act. A good example of this would be regulatory proteins. These could be expressed somewhere else (or on a different strand) and then bind and affect transcription. 
4 0
3 years ago
is it bad that a kid secretly put a drug in my drink and i drunk it what do i do???? am i a drug man now?
Maslowich
Tell your parents and report it to the police.
5 0
4 years ago
Read 2 more answers
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