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Maksim231197 [3]
3 years ago
8

+Why are nutrients from fertilizer harmful to aquatic ecosystems?

Biology
1 answer:
ivanzaharov [21]3 years ago
6 0

Answer:

Nutrients from fertilizer are harmful to aquatic ecosystems because they cause algae and other plant life to grow rapidly. This causes the oxygen level in the water to drop, which in turn kills fish and other animals in the ecosystem.

Explanation:

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People infected with the human immunodeficiency virus (HIV) have an increased
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C. HIV destroys Helier T cells
This makes it harder for our body to fight off other infections.
HIV basically hijacks the white blood cells (T-cells) n use it to reproduce itself.
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3 years ago
What are Mendel's Laws?
Nady [450]

1. Law of Segregation: When gametes form, alleles are separated so that each gamete carries only one allele for each gene

2. Law of Independent Assortment: The segregation of alleles for one gene occurs independently to that of any other gene

3. Principle of Dominance: Recessive alleles will be masked by dominant alleles†

6 0
3 years ago
A 0.2 M solution of NaCl contains ________ g of NaCl in 1 l of ________.
Maksim231197 [3]

Answer:

11.7 g in 1 L of water.

Explanation:

Molarity (M) or Molar concentration is a measure used in chemistry for solutes in a solution.

It is defined as mol/ L (number of moles per litre).

0,2 M means we have 0,2 mol/ L

In order to know how many grams this means we need to look up the molecular weight of the solute. In this case NaCl: 58.443 g/mol

\frac{1 mol NaCl}{58.443 g} = \frac{0.2 mol}{X g}

X= \frac{(0.2 mol x 58.433 g}{1 mol}

X= 11.69 g

The solution has 11.69 g of NaCl in 1 L of water since its an adequate polar solvent for NaCl dissolution.

8 0
3 years ago
Which eye structure is primarily responsible for making the adjustments required to focus on objects both near and far?.
lbvjy [14]

Answer:

The lens

It helps to focus on objects and light

5 0
2 years ago
Choose the law that BEST explains the example:
german

Answer:

3rd law

Explanation:

First law of Newtons :

 Newton's First Law states that, unless an external force acts on it, an object will remain in a straight line in rest or uniform motion.  

The second law of Newtons :

The second law states that an object's acceleration depends on two variables-the net force that acts on the object and the object's mass.

The change in the linear momentum of the object is equal to the force.

Third law of Newtons :

This law states that every action has its reaction with the same magnitude but in the opposite direction.

When we push the wall , then the wall does not move because the wall is fixed but we skid opposite to the direction of applied force because wall offers an opposite force on our body.

Therefore the answer is "third law".

5 0
3 years ago
Read 2 more answers
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