Which systems interact to maintain blood pressure? a. urinary, circulatory, endocrine b. circulatory, respiratory, nervous c. muscular, endocrine, nervous d. urinary, endocrine, nervous

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

First dropdown options: a. runoff b. condensation c. evaporation second dropdown options: a. photosynthesis b. transpiration c. sweating third dropdown options: a. raindrops b. clouds c. animals