Please help question is in photo and below 3. Is the function linear, quadratic, or exponential?
4.what is the y-intercept, and what does it mean in this case?
5.Predict the age at which cellular mitosis stops working in human blood cells.

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

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Which of the following explains why a tree is often used as a model to represent the principle of common descent