What human activity would have the most significant effect on the temperature of the earth? a) deforestation b) producing smog c) producing cfcs d) burning fossil fuels

Which of the following are true about bacteria? select all that apply. bacteria are all around you. bacteria can or harmful. bacteria are multicellular organisms. bacteria can only be found on the human body.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million