Improvements in harvesting systems include all of the following advances EXCEPT trees are now cut closer to the ground.
trees are lifted by machine instead of manually.
trees can be transported using much smaller equipment.
trees grow at faster rates than they did in previous decades.

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

this would be called the responsiveness