The roots of plants are able to self-regulate the amount of water they take in. Therefore, by adding this amount of water, Stela is insuring that the plant will have as much water as it needs to grow.
Answer:
A supermassive black hole is a perfectly ordinary black hole that happens to be really, really big.
Answer:
Lipids (fats) and carbohydrates
Explanation:
Carbohydrates can be directly broken into glucose for use in cellular respiration. Lipids are used to store energy for extended periods of time. Proteins can be used for energy, but are not as efficient or quick as the previously mentioned macromolecules.
A high level of gene flow into a population increases genetic diversity in a population. A high level of gene flow out of a population decreases genetic diversity in a population. Genetic drift is the change in allele frequencies due to "sampling error" factors. Typically, genetic drift has the biggest impact on small populations.
Gene flow (or gene migration) is a mechanism of evolution (change the allele frequencies) which transfers genetic variation among populations due to migration. High level of gene flow decreases the genetic differentiation between the two populations.
Genetic drift is a mechanism of evolution that acts by chance (“sampling error”) often when a population is reduced in size by a natural disaster (bottleneck effect) or when a small group leaves the main population and forms a colony (founder effect).
