Answer:
Genetic drift
Explanation:
Genetic drifting is a phenomenon which results in a variation of allele frequency in a population. It results in the loss of certain allele due to low reproduction and increase in certain allele due to increased reproduction rate
Answer: The Pulmonary Arteries
Explanation: They are two pulmonary arteries with on serving each human lungs, which brings deoxygenated blood to the lungs from the hilium. The arteries go into the capillaries of the alveoli. Capillaries are the thinnest ,smallest blood vessel,they supply oxygen to single tissues in all parts of the human body.
Answer:
10 kcal.
Explanation:
The third trophic level receives 10 Kcal from the second trophic level while on the other hand, 90 Kcal energy releases in the atmosphere in the form of heat energy. The producers has 1000 Kcal energy from which only 100 Kcal is transferred to the primary consumer or second trophic level while the remaining 900 Kcal releases in the form of heat energy in the atmosphere and then only 10 Kcal energy is transferred to third trophic level while the remaining 90 Kcal releases in the atmosphere.
I think it's important to concentrate yourself to complete what you are doing, but if you have also new ideas try to develop them into something useful
