Assessment started: undefined. Item 1
Which choice describes the path of energy from its original source through a food chain?

insects → mice → snakes → hawks

sunlight → grass → zebras → lions

algae→ minnows → trout → eagles

sunlight → bacteria → owls → humans

Red blood cells are responsible for transporting oxygen in the blood. people with sickle cell anemia were born with a defective gene that results in sickle-shaped red blood cells. individuals with the disease often suffer pain in their extremities due to the build-up of these cells causing blockages in the blood vessels. the shape of the blood cells also reduces the amount of oxygen transported in the blood.