D. cause bacterium are single celled organisms.
It is difficult to calculate the Earth's carrying capacity because there are lots of resources that we can use and their is so much land on the earth that hasn't been used, but at the same time some resources are running low, and some resources we have a lot of, like food, so that it is why it is difficult to calculate
Adaptation has
wide effect on the life of an organism for it is primarily a process rather
than a physical part of a body. All adaptations help organisms to
survive in their <span>chosen
environment. </span>
<span>The adaptive traits
may be structural, behavioral and physiological. Structural adaptations are
physical features of an organism such as shape, internal organization or body
covering. Behavioral adaptations are the ability to learn. They are often inherited
like instincts and the knowledge for searching food or mating. While
physiological adaptations can allow the organism to perform special functions
like for instance, secreting slime, making venom, temperature regulation and
other aspect of homeostasis. </span>
The two methods used by breeders to increase the rate of mutation is radiation and chemicals.
The nucleotide component that contains nitrogen is base.