Answer:
Shark eats a parrotfish. No but help to maintain the populations of the next-biggest predators in the food chain.
Explanation:
Answer:
The correct answer will be option-A
Explanation:
Chromosomal abnormalities are caused when the chromosome pair fails to disintegrate through a process called non-disjunction. The non-disjunction of chromosomes usually takes place at the anaphase I or II of meiosis I which involves the X and Y chromosomes.
The abnormality observed with 45 chromosomes or reduction in one sex chromosome or 45, XO is caused when one X copy of a chromosome is completely absent in the cell.
The cause for the loss of one chromosome is the non-disjunction during meiosis I.
Thus, option-A is the correct answer.
Any place, where organism are linked with their environment is referred to as an "Ecosystem". It can be as small as a "Cow dung" & may be as large as a whole "Biodiversity"
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C) matter is changed into various forms but the total quantity remains unchanged.