When a sea urchin egg is removed from the
ocean and placed in freshwater, the egg
swells and bursts. which of these causes
water to enter the egg?
a) coagulation
b) sodium pump
c) active transport
d) osmosis

Osmosis is always responsible for water crossing a membrane

Explanation:

the answer would be..

b. sucking

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