The elements carbon, oxygen, hydrogen and nitrogen combined make up about 96% of our bodies (carbon is about 18%), Carbon is necessary for life because it is a(n) element found only in
the atmosphere

excellent bonder

is found mostly in
dead things

uncommon element in
all living things.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u

which fault and or fold did you find most difficult to diagram