Answer: c Differences due to inherited genes.
Gene flow or gene migration is an important source of genetic variation. It is a movement or transfer of genes from one population to another. It can take place between two populations of the same species through migration and is brought by reproduction and vertical gene transfer from parent to offspring.
The energy of the ecosystem can be best described as option C. The amount of energy entering an ecosystem from the Sun is equal to the amount used by organisms plus the amount lost as heat.
The correct answer is option C
The only source of energy in an ecosystem is the sun. The green plants make food by the help of photosynthesis. These plants are also eaten by the herbivores and then these herbivores animals are eaten by the carnivores animals present in the ecosystem.
The energy from the sun is transferred to herbivores, then from herbivores to carnivores.
Some amount of energy is also lost during the process of energy transfer.
The energy transferred from one level to another + the energy lost
= energy absorbed from the sun.
Explanation: USATestPrep states “Lack of blood pressure to the brain may cause an area of the brain to stop working and die, this is called a stroke. This causes a lack fo oxygen to a particular area of the brain” (Not my words, its UsATestPrep’s!!)