Explanation:
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Answer:
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells.
Explanation:
D) <span>an increase in tree cover in the tundra</span>
The structures that provides the muscle cells in the heart with a constant supply of oxygen is C . coronary
Heres the answer
environmental factors can influence natural selection by increasing or decreasing the amount of genetic variation in a population. Increasing genetic diversity usually occurs via mutation, whereas decreasing genetic diversity can occur when that particular allele reduces the chances of individuals with that trait to reproduce (e.g. the organism often dies before breeding).
