Answer:
The answer is the tilt of earth.
Explanation:
Because the tilt of earth affects the angle of the sun's rays and causes the seasons in temperate regions. Even though the earth is far away from the sun, the northen hemisphere is tilted toward the sun, so the solar energy is more concentrated in this area.
Answer:
a prezygotic barrier
Explanation:
Both wild tigers and lions are said to be reproductively isolated.
Reproductive isolation is defined as the existence of barrier between organisms of different species such that they cannot reproduce.
The mechanisms of reproductive isolation varies. While some act to prevent the formation of zygotes (in case of mating) between organisms of different species, some ensures that the resulting zygotes are invalid.
Reproductive isolation mechanisms that act to prevent fertilization and formation of zygotes are referred to as prezygotic mechanisms while those that ensure that invalid zygotes result (in case of successful fertilization) are referred to post zygotic mechanisms.
<em>The natural differences in the ranges of wild tigers and lions ensure that both animals do not mate with each other, let alone results in zygote. This is a form of pre-zygotic reproductive isolation mechanism.</em>
Answer:
Light energy or chemical energy
Explanation:
Light energy or chemical energy support the whole pyramid. Without it, plants/producers would die (they wouldn't be able to photosynthesize or chemo synthesize), leaving the first level consumers with no food, thus leaving the second level consumers with no food, and so on.
Hope this helped!
Answer:
The correct answer is c aerobic respiration
Explanation:
The process glycolysis,TCA cycle and electron transport chain are additionally called Aerobic respiration.
Glycolysis occurs in the cytoplasm and deals with the catabolism or break down of glucose in a sequence of enzyme catalyzed steps to form pyruvate and ATP.
TCA cycle occurs in Mitocondria.This metabolic process helps in the formataion of ATP along with the oxidation of glucose to generate CO2 and H2O.
Answer:
It corresponds to a leaf tissue.
Explanation:
The composition of the leaf tissue, which absorbs sunlight, is observed in the process of photosynthesis. The epidermis, parenchyma, stoma, among other structures are observed.
