Humans and dogs often have a relationship in which the dog provides protection and companionship in return for food and shelter. what type of relationship does this illustrate? a. mutualism b. parasitism c. competition d. commensalism

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

In a leaf, dermal tissue a) stores food b) stores carbon dioxide c) releases oxygen into the air d) transports water from the roots