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lakkis [162]
3 years ago
8

Coal is a fossil fuel that is used to produce electricity. Which of these statements best describes a cost of coal mining on the

region around the mines?
It gets less electricity.
It becomes depleted of essential minerals.
Its groundwater is contaminated.
Its rivers and streams become dry.
Biology
1 answer:
Nastasia [14]3 years ago
6 0

Answer:

It's groundwater becomes contaminated.

Explanation:

More than 94% of the coal ash ponds in the United States are unlined. Almost all of them are contaminating groundwater with toxins above levels that the U.S. Environmental Protection Agency deems safe for drinking water.

sorry if it dosn't help i had a bad day ;-;

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Based on the information in the table, which of the following changes is least likely to produce a phenotypic
yaroslaw [1]

GAU to GAC​ is least likely to change phenotype of an organism.

<h3><u>Explanation</u>:</h3>

Phenotype of an organism is defined as the physical characteristics of an organism. This phenotype is dependent on the genotype of the organisms. This means the phenotypic characters are actually the expressions of the genes of the organisms. Now the genes are expressed in form of codons that are the three nitrogen base sequences. Each codon codes for a particular amino acid which in turn polymerises to from the protein which actually forms the phenotype of the organism.

Now there are 20 amino acids and 64 codons. Thus there are more than 1 codons for a single amino acid. So, if a codon is replaced by another codon which codes for same amino acid, then the phenotype is least likely to be affected.

Both the GAU and  GAC​ codes for aspartic acid. So the phenotype won't be affected much by this mutation

5 0
2 years ago
Which is an example of population density?
Rudik [331]

Answer:

D: two jaguars per thousand hectares.

Explanation:

Population density refers to the computation of population by unit area. It is usually implemented in living organisms, generally in humans. It is a key geological term. In easy form, population density implies to the number of people existing in an area per square kilometer or hectare, etc.

So, two jaguars per thousand hectares is an example of population density as it involves the number of jaguars (population) per thousand hectares (per unit area).

8 0
3 years ago
The ________ is the single shape a protein adopts under physiological conditions. most stable enantiomer primary structure minim
stellarik [79]

Answer:

Native conformation

Explanation:

Native conformation is the correct structure or shape a protein should assume when folded, of which the protein is able to perform its operational function. Outside a proteins native conformation, or when denatured, the protein becomes unable to perform its usual main functions. The native conformation of a protein is the shape it takes in other to be functional.

7 0
3 years ago
Plants release a different gas back into the air. What is the name of that gas
notka56 [123]
They release the gas Oxygen.
4 0
3 years ago
Earth’s axis passes through the North and South Poles. It takes Earth 24 hours to rotate once around its axis. Earth revolves on
ivolga24 [154]
Earth revolves once around the sun in 365 days during a non-leap year

There are 365 days in a year

hope this helps
4 0
3 years ago
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