Air is made up of several gases, but the two most important gases are Oxygen and Carbon dioxide. Without oxygen, animals will die, and without carbon dioxide, plants cannot survive<span>. Food (nutrients): Living things need energy for function. Energy is needed to grow, reproduce, move, and to work.</span>
Answer:
b. tropical forests
Explanation:
Tropical forests have the highest biodiversity and primary productivity of any of the terrestrial biomes.
Answer:
A <u> theory </u> may be formed from many related hypotheses that have been tested and support the evidence.
Explanation:
<u>A THEORY -:</u> A theory is a well-established, tested explanation that gives some part of the natural world a unified description. A hypothesis is focused on substantiated knowledge, repeated testing, and a large community of scientists / researchers agree on it.
The aim of a theory is to try to understand phenomena that many researchers have examined extensively and carefully over time. A hypothesis does not prove that the "unified description is correct." However, because the theory is the result of scientifically based research, the theory (as opposed to a single hypothesis) is more likely to be correct. Any hypothesis can (and should) be tested, but many trained scientists must scientifically perform and study the experiments.
Answer:
Recombination is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles. This recombination process creates genetic diversity at the level of genes that reflects differences in the DNA sequences of different organisms.
If most of my cooking equipment is copper and my utensils are silver, I will not want to use a sanitizer that contain CHLORINE. This is because, chlorine in the sanitizer will react with the silver of the utensils to form a black layer of silver chloride on the utensils. Also, chlorine will react with the copper of the cooking equipment to form a cloud of copper ll chloride which will dissolve when it comes in contact with water forming a blue green solution.<span />
