Answer:
A. Compounds contain fixed ratios of different elements.
Explanation:
Water always has this 2:1 ratio of hydrogen to oxygen. Like water, all compounds consist of a fixed ratio of elements. It doesn't matter how much or how little of a compound there is. It always has the same composition.
<h2>
Answer</h2>
It is because of different arrangements of nucleotide bases.
<h2>
Explanation</h2>
There are only five types of nucleotide basis are present in the genetic material which makes up the all the genetic information of the individuals. These nucleotides are named as Adenine, Thymine, Guanine, Cytosine and Uracil. In all the living beings on the earth, these only five nucleotides are present which decides their behaviour and functions on the earth. These five bases have features to get any arrangements according to the situation. Their different arrangement at the heredity material makes the difference in all living beings regarding their behaviour.
Answer:
I say the correct answer is the 3rd one.
Explanation:
Answer is number 3
The symbiotic relationship in which both participating parties benefit is called mutualism. When one organism benefits and the other organism is harmed it is called<span> parasitism.</span>