The stinger from a honeybee should be: Select one: a. irrigated with copious amounts of water. b. squeezed with tweezers and removed. c. left in place and covered. d. scraped away from the skin.

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above

Which of the following is an example of competition a. the leaves of a tree prevent a small shrub from getting sunlight. three species of birds feed a different heights in the same tree. b. three species of birds feed at different heights in the same tree c. zebra and giraffe’s feed on different grassland plants d. cats living in two different homes eat the same brand of cat food.