Answer:
The answer is D a retrovirus inserts DNA into the host cells genes
The answer is A: '<span>underwater landslides </span>'. Underwater landslides would cause a wave, rather than a current. Ocean waves are caused by energy passing through water. An ocean current on the other hand is a mass of water moving in a definite direction through another mass of water. This movement is driven by forces that could be derived from surface winds, tidal fluctuations and seawater density contrasts.
Answer: if there were no decomposers in an ecosystem then, wastes and the remains of dead organisms would pile up and the nutrients within the waste and dead organisms would not be released back into the ecosystem.
Explanation:
Normally a 10× drop for each trophic level, so I'd say 2,000 kilocal.
