What's the definition of Ecology

Select the correct answer. in the image, if the washcloth represents consumed food, which organ of the digestive system correctly represents the action performed by the hands? hands squeezing water from a washcloth a. esophagus b. large intestine c. liver d. mouth

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays