Alyssa is observing two cells, x and y. each cell is from either a plant or an animal. she records some of her observations in a chart.

Which of the following best describes homeostasis? a. keeping the internal environment in a stable state b. keeping the external environment in a stable state c. beneficial characteristics resulting from mutation d. reproduction that results in offspring identical to the parent.

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae

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