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xeze [42]
3 years ago
15

The principle difference between point source and nonpoint source water pollution is _______.

Biology
2 answers:
Rama09 [41]3 years ago
7 0

The correct answer is option B

The main difference between the point source and non point source is the number of sources that is involved in them.

The point source can be defined as the pollution having a single source  by which the pollution is coming out.

Non point source can be defined as the pollution having more than one source of pollution which combinely can be defined as non point source.

RideAnS [48]3 years ago
4 0
Your answer would be B ; the number of sources of pollution
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Which of the following terms is used to describe how part or parts of an organism work?
il63 [147K]

Answer:

<u>B</u>. Physiology

Explanation:

The way in which a living organism or bodily part functions.

The branch of biology that deals with the normal functions of living organisms and their parts.

8 0
3 years ago
In a hardy-weinberg population with two alleles, a and a, that are in equilibrium, the frequency of allele a is 0.2. what is the
Allushta [10]
The Hardy-Weinberg equation is as follows:
( {p + q})^{2}  = 1
{p}^{2}  +2pq +   {q}^{2}  = 1
Where:
(convert all % to decimals)

p= homozygous dominant
q= homozygous recessive
pq= heterozygous

While you did not specify whether the 0.2 frequency was for dominant or recessive, we can still figure out the answer.

Using the 1st equation, we can solve for the other dominant/recessive frequency:

1-0.2=0.8

Meaning that:

p= 0.8 & q=0.2

If the heterozygouz frequency is 2pq, then it becomes a simple "plug & chug" sort of approach.

2(0.8)(0.2)= 2(0.16)= 0.32

So, the heterozygous frequency would be:
0.32

Hope this helps!
8 0
2 years ago
Carbohydrates are made up of carbon, hydrogen, and ______.
jasenka [17]
Oxygen.
Hope it helps!
3 0
3 years ago
Read 2 more answers
imagine a model of a cell shaped like a cube.Calculate the ratio of surface area to volume for a cell model measures 3 cm on eac
Svet_ta [14]
Smaller cube (1 cm X 1 cm X 1 cm) 

<span>The surface area of one side = 1 cm X 1 cm = 1 <span>cm2</span></span>

 

<span>There are 6 sides, total SA = 6 X 1 <span>cm2</span> = 6 <span>cm2</span></span>

 

<span>Volume = 1 cm X 1 cm X 1 cm = 1 cubic cm (1 <span>cm3</span>)</span>

<span>Surface to Volume Ratio = 6 <span>cm2</span>/1 <span>cm3</span> = 6 <span>cm2/cm3</span></span>


Larger cube (6 cm X 6 cm X 6 cm) 

<span>The surface area of one side = 6 cm X 6 cm = 36 <span>cm2</span></span>

 

<span>There are 6 sides, the total SA = 6 X 36 <span>cm2</span> = 216 <span>cm2</span></span>

 

<span>Volume = 6 cm X 6 cm X 6 cm = 216 <span>cm3</span></span>

 

<span>Surface to Volume Ratio = 216 <span>cm2</span>/216 <span>cm3</span> = 1 <span>cm2/cm3</span></span>

<span> </span>


8 0
3 years ago
What are sudden large declines in biodiversity in the fossil record called? A. mass evolution B. mass decline C. mass increase D
svetoff [14.1K]
The answer would most likely be D. Mass Extinction
8 0
3 years ago
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