Glaciers can only form when a) there is an ice age b) there is a u-shaped valley in the mountains c) the amount of snow exceeds the amount of rain d) more snow falls than melts

Nucleic acid certain protein cell membranes certain carbohydrates

Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided

You are observing different types of cells in your science lab. one cell has many chloroplasts. what is the most likely function of this cell? a. energy production b. photosynthesis c. reproduction d. digestion