What is the main function of the brain? a secrete hormones to regulate body functions such as metabolism and growthb act as a control center that receives messages from nervesc carries blood around the body and constricts or expands when neededd detects temperature changes based on air temperature of the surroundings

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 types of rock would most likely contain a fossil? slate granite lava rock limestone

Types of scientific inquiry that biologist engage in that cannot be completely controlled