Answer:
The nitrogen gas must be changed to a form called nitrates, which plants can absorb through their roots. The process of changing nitrogen gas to nitrates is called nitrogen fixation. It is carried out by nitrogen-fixing bacteria. The bacteria live in soil and roots of legumes, such as peas.
The hormone Progesterone increases in the blood to a level that causes lh to be released from the anterior pituitary.]
Answer:Because of where they are from.
Explanation:
Geographic, or physical, barriers result in geographic isolation
Answer:
Focal length of the lens increases hence the size of the lens increases.
3)B
4) B
Explanation:
3)Focal length of the lens increases hence the size of the lens increases.
Pupil of the eye decreases in size so as to decrease the amount of sunlight entering the eye when the person looks at the sky. As the size of the pupil was increased for increase the intake of the light while reading a book in the shade
4) Im not really sure, but i am pretty sure it's B. Don't take my word ;D
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The type of clothes you should wear in a labratory is a lab coat and goggles to protect your eyes from harmful chemicals you may use.
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