Which characteristic is common in young rivers? a. a wide, u-shaped channel b. location far from headwaters c. a steep stream gradient d. many tributaries

The study of interaction between living organisms and their enviroment is called (a) phytogeography (b) ecology (c) phytosociology (d) ecosystem

Study this image which statement best describes the rock shown check all that apply

Ruby is conducting an investigation. an advantage of her design is that she can use a large range of variables, with that she can not be sure that one variable is the cause of another. what kind of investigation is ruby most likely conducting?