Answer:
Explanation:
Food chain may be a linear sequence of transfer of energy when one organism is being eaten by another organism in an ecosystem. The transfer of energy are often explained by 10% law which states that energy decreases by 10% because it is being transferred from lower to subsequent higher trophic level. there's a limit to the amount of levels that a organic phenomenon can reach this is often due to the subsequent reasons:
1. a big amount of energy is lost thanks to the very fact that organisms undergoes respiration . This lost energy can't be reverted back. Hence, limits the quantity of energy being transferred to the upper trophic levels.
2. a number of the undigested waste is excreted by the organisms. This waste being the a part of biomass gets lost within the environment, which again limit the quantity of overall energy being transmitted to the upper trophic levels.
3. Not all organisms are consumed by other organisms belonging to the distinct trophic levels. a number of them might not survive or die.
Answer:
Spindle fibers move homologous chromosomes to opposite sides is called <u>anaphase I.</u>
Explanation:
Anaphase I is a stage of meiosis (which is a cell division). During this stage, homologous chromosomes, dragged by the achromatic spindle fibers, are separated towards each pole of the cell.
The achromatic spindle is a set of microtubules, this structure is shaped like two cones joined by their bases. It consists of protein fibers that radiate from each pole. The contraction of these fibers is responsible for the movement of chromatids during anaphase.
At the end of anaphase I, there's a set of chromosomes at each opposite pole of the cell, one of each pair of homologous chromosomes, so the number of chromosomes has been halved.
(D), amount of time and area of physical contact between the substances