A laboratory technician places red blood cells into three different solutions. Observations are recorded each minute for five minutes. Which of the following best explains what is causing the red blood cells in solution 1 to change size over the five-minute period? *

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

Which of the following is an advantage of solar energy?

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water