All living things are composed of cells. Cells are the basic unit in living things. All cells are produced from other cells.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.

Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?

Matched chromosomes carrying information about the same characteristics in the organism are called