Hummingbirds can hover in midair by flapping their wings 15-80 times per second depending on the species. Which organelle would you find an abundance of in the muscles of their wings? A. ribosomes
B. nucleus
C. lysosomes
D. mitochondria

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from