Explain how the endocrine and nervous system work together to maintain homeostasis in a human body

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.