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natka813 [3]
4 years ago
14

Water which is returned to the environment after secondary treatment is known as:

Biology
1 answer:
Mashcka [7]4 years ago
8 0
The answer to this question is evaporation
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At which of the following times would salinity be highest in an estuary?
o-na [289]
Dry season because it increases evaporation of water would increase the concentration of salt in the water
4 0
3 years ago
Read 2 more answers
It took 1649 years for the world population to double, going from .25 billion people to .50 billion people. How long did it take
mixas84 [53]
I found the missing part of this question.

Statisics on Human Population

<span><span>Year A.D.            Number of People (in billions)
</span><span>1650                         .50
</span><span>1750                         .70
</span><span>1850                         1.0
</span><span>1925                         2.0
</span><span>1956                         2.5
</span><span>1966                         3.3
</span><span>1970                         3.6
</span><span>1974                         3.9
</span><span>1976                         4.0
</span><span>1980                         4.4
</span><span>1991                         5.5
</span><span>2000                         6.0
</span><span>2004                         <span>6.4
</span></span></span>
The answer is it took 200 years more to double the population from 0.50 billion to 1.0 billion people. The year was 1850.

It was in 1925 when the population double again from 1.0 billion to 2.0 billion.

7 0
3 years ago
What are two species most commonly poached worldwide, why are they poached?
marishachu [46]
There are many species being poached. Some include:
- Whales
- Sharks
- Turtles
- Tigers

They all have something valuable, causing them to be poached and sold.
3 0
4 years ago
What type of mutation can alter DNA by the addition of a nucleotide base?
timama [110]

Answer: insertion

Crossing over is when homologous* chromosomes exchange genes, resulting in gene combinations.

Deletion is when a base pair is deleted from DNA. Insertion is when a base pair is added to DNA. Both insertion and deletion are serious because every amino acid beginning at the mutation will most likely be incorrect. This will lead to a nonfunctional protein.

Base-pair substitution is a substitution of one base pair for another in DNA. The effects of this may be a silent** point, missense*** point, or nonsense**** point.

-------

<em>*A pair of matching chromosomes. They have the same genes but can have different versions.</em>

<em>**A special case where no amino acids are affected.</em>

<em>***Affects one animo acid. The whole protein structure and function may or may not be disrupted. </em>

<em>****Results in a stop codon that shortens the protein.</em>

8 0
3 years ago
Summarize how Hershey and chase confirmed that dna is the genetic material
Ierofanga [76]

He labeled the protein of bacteriophages with radioactive sulfur and their DNA with radioactive phosphorus. The bacteriophages were allowed to infect bacteria.

5 0
3 years ago
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