Answer: The correct answer is-
phytoplankton .
In the given food chain of aquatic ecosystem, Phytoplanktons occupy the first trophic level ( as they form the base of the food chain) and they are called producers ( synthesize their own food using carbon dioxide and water in the presence of sunlight).
The energy is then transferred to the subsequent trophic levels from phytoplanktons to consumers ( krill, seals, and sharks).
If phytoplanktons are removed from the food chain, there will be no food available for krill and they will start to decline, which will eventually cause the decline in the subsequent trophic levels ( that is seals and shark).
Thus, phytoplanktons is the right answer.
The factors that are necessary for the formation of new species are genetic mutations, isolation, some environmental factors, etc.
The difference in DNA among individuals or the differences between populations is referred to as variation.
There are multiple sources of genetic variation including the following:
Variation can leads to the formation of new species.
Thus, these are some factors that are responsible for the formation of new species.
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Answer:
reproduction at different times
Explanation:
"tutor-verified" one was wrong doesnt listen to it XD
50 percent
0 percent
25 percent
=
Answer:
Most of the ATP in cells is produced by the enzyme ATP synthase, which converts ADP and phosphate to ATP. ATP synthase is located in the membrane of cellular structures called mitochondria; in plant cells, the enzyme also is found in chloroplasts.
Explanation:
Answer:
When the cell has extra energy it stores that enrgy
by reattcaching a free phosphate molecule to ADP, turning it back into ATP. The ATP molecule is just lile a rechargable battery.
Answer: external fertilization
Explanation:
External fertilization is the process of fertilization in which the male sperm cells fuses with the female egg cells outside the body of the female. This type of fertilization is used by the organisms which live in the water body.
The salmon is a fish species which utilizes external fertilization. In the case of salmon, the female salmon drops the eggs in the bottom of the water which are fertilized by male salmon after secreting their sperms over these eggs.