Answer:
introduces substances into an environment
Explanation:
eutrophication is just a bunch of algae in a pond or source of water. pollution is bad materials in the air. smoke and algae are substances in an environment.
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Answer: The question is is incomplete, here are the options.
A. Separating the two groups decreases the chance that the two groups will diverge
B. Traits that form in one group from evolutionary forces quickly spread through both populations
C. Forces like natural selection and genetic drift affect the genes of the two subgroups differently
D. Gene flow is increased in the two subgroups that are formed
The correct Option is C.
C. Forces like natural selection and genetic drift affect the genes of the two subgroups differently.
Explanation:
Forces of natural selection and genetic drift affect the genes of the two subgroups differently because there are differences In the way they are natural selected and genetic drift.
Natural selection is the different phenotype or traits developed by different organisms who h make them to adapt, survive and reproduce than others in their environment. The two sub groups have different phenotype Expressed which cause them to develop different trait.
Genetic drift refers to change or variation in frequency of genes in animals overtime. Genetic drift occur at different rate in different population of organsim which lead to development of different trait in the subgroup.
Answer:
two
Explanation:
Double-stranded RNA (dsRNA) is RNA with two complementary strands, similar to the DNA found in all cells, but with the replacement of thymine by uracil.
Answer: Option A.
Physical method of euthanasia may be the most humane method for relieving pain and sufferings for some instances.
Explanation:
Euthanasia is a physician assisted method with the deliberate intension to end ones life which might be due to some difficulties a person is passing through to relieve persistent pain. A Doctor is allow under law to do euthanasia for a patients if the patients family and friends agree to it.
Physical method of euthanasia includes gunshot, electrocution,freezing, microwave irradiation,cervical dislocation, decapitation,decompression, use of captive volt , pithing and so on.
Centriole, lysosomes, cilia and flagella
