Answer:
changes caused by harmful pathogens
Explanation:
The immune system is the body's defense system. It protects the body from things that can harm it such as bacteria, viruses, fungi, and toxins.
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Answer:
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<u><em>A vendor displays a variety of fruits in a market in Amsterdam, Netherlands. Fruits and vegetables are an important source of nutrients. Apples, such as the red and green varieties on the top left of this image, are excellent sources of fiber, which aids in digestion. Oranges and lemons, also in the top row, are high in vitamin C, which helps the body's immune system. Strawberries, in the middle row, also contain vitamin C. Figs, the dark purple fruit in the center row, contain calcium, which contributes to healthy teeth and bones. Grapes have fiber and high levels of sugar, which provides energy. Raspberries have B-vitamins, which contribute to healthy skin and muscles. Nectarines, in the bottom center, are a type of smooth-skinned peach with high levels of potassium, which helps maintain fluid balance in the body.</em></u>
Given that a cell is undergoing meiosis, at the end of meiosis I, its number of chromosomes would be in half. Provided in the question that the cell in G1 has 40 chromosomes, at the end of meiosis I, there will be 20 chromosomes in each daughter cell. And each chromosome has two sister chromatids, then there will be 40 sister chromatids in each daughter cell.
<span>By producing melanin (pigment), the skin protects the underlying structures from ultraviolet light's harmful rays while producing vitamin D, which works with calcium for multiple body processes.
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Vitamin D is produced by the skin when it is exposed to the sunlight. Ultraviolet B (UVB) is the part of the sun's rays that affects the skin to produce such vitamin.
A forest fire would trigger secondary succession
