Community structure is influenced by many factors, including abiotic factors, species interactions, level of disturbance, and keystone species, play particularly important roles in determining their communities’ structure.
Answer: A. true
Explanation: The phenotype is the physical characteristics of a person. So, if a person has brown eyes, which may be a characteristic that is dominant, then they would have a genotype of BB or Bb. The reason why Bb, heterozygous, is not a different color is because the recessive b does not affect the dominant B allele.
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Process of using the energy in sunlight to make food (glucose).plastids: A group of closely related membrane-bound plant cell organelles; include schloroplasts<span>, </span>chromoplasts<span> and leucoplasts. stroma: Space outside the </span>thylakoid membranes<span> of a </span>chloroplast<span>; site of the Calvin cycle of photosynthesis.</span>
Answer:
(1) they keep toxic substances out of the cell.
(2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles
