Some species of penguins, such as chinstrap penguins, depend on open water for their survival. other species of penguins, such as adélie penguins, depend on ice. over the last 20 years, the population size of chinstrap penguins has increased, and the population size of adélie penguins has decreased. which of the following most likely caused these changes in population size? a. an increase in landmass and shorelines b. an increase in global air and water temperatures c. a decrease in the number of leopard seal predators d. a decrease in the length of time before chicks take to sea

Environmental differences within ecosystems are generally caused by

How many major plates cover the earth

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.