Asedimentary rock containing a fern fossil has been found. what does this tell you about the area at the time the rock was formed
a the area was cold
b the area was hot
c the area was on land
d the area was covered by an ocean

The fern is a vascular plant that reproduces by producing spores. This plant produces no fruits or seeds. The ferns have complex leaves, and have true stems and roots. The presence of a fern fossil in a sedimentary rock indicates that the rock present on the land. The fern plants are found above the land, and this rock must have been present there for it to contain the fern fossil.

Hence, The correct answer is 'Option C - the area was on land'.

i think that d. wind is the answer.   i missed the question when i answered a. currents.

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