Answer:
Difference in their beak size, colour of their feather and body size.
Explanation:
The genetic variation that occurs in the three different species of bird is the difference in their beak size, colour of their feather and body size. The difference of beak size occurs due to difference in their food selection that is available to the birds. Some birds of the population feed on small food particles having small beak size whereas other have large beak size due to preference of large food materials. Some birds have colour like their surrounding that helps them to hide from their predators. Some birds specie have large body size due to availability of more food or due to genetics.
C: they convert dead organic compounds into reusable organic compound
Answer - 1,000 kcal/day
Given the situation above, Matthew should consume an extra <span>1,000 kcal per day in order </span>to regain to a healthy weight. This <span>will promote a two pound weight gain </span>per week. <span>Typically, one pound of fat weighs 3500 kcal, so it would takes </span>an extra<span> 3500 </span>calories<span> to gain one pound of body weight.</span>
Phosphate, Nitrogen, & Nucleotides