The pancreas serves both endocrine and exocrine functions.

Are substances released into the environment that in excess amounts cause damage

*will mark brainliest to first correct answer* photosynthesis led to increasing levels during the later proterozoic eon? a. oxygen b. water c. carbon dioxide d. none of the above

Which of the following is not considered an appendage of the skin? nails glands follicles none of the above