Which scientist’s experiments with dogs introduced classical conditioning

Which two sets of political ideas speed as a result of the worldwide depression of the 1930s

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.

The nile river is referred to as the giver and taker of life. explain what this means.