I'm Katie, can someone help me? will mark brainliest In a negative feedback loop, the initial signal is: Question 15 options:

remains unchanged

canceled out

amplified to a climax

Aresearcher has developed two stains for use with seed plants. one stains sporophyte tissue blue; the other stains gametophyte tissue red. if the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur? a) the pollen grains will be pure red.b) the pollen grains will be pure blue.c) the pollen grains will have red interiors and blue exteriors.d) the pollen grains will have blue interiors and red exteriors.

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems