Farmer Brown sprays insecticides on his crops to kill insects. Several days after spraying, he notices many dead bugs around the pond. That summer, the number of frogs around the pond was lower than ever. The frog population has declined because

Mendel crossed a plant that was pure breeding for the traits of green pods and terminal flowers with one that was heterozygus for the traits of pod color and flower position what would the outcome likely be

A student and teacher working together to answer an experimental question is an example of

Fertilization of an egg by sperm takes place in the

Write an explanation based on natural selection for the high incidence of tusklessness among female elephants in Gorongosa.

Why is it rare for the soft parts of an organism to become a fossil? A. The soft parts take a long time to decay. B. The soft parts can be eaten by other animals. C. The soft parts cannot be buried in sediment. D.

Why do our classification systems change?

Potato plant, which organ is used primarily for food storage rather than food production? A) flower, B) root, C) stem, D) left

Which of the following is an example of an extended product responsibility? Select one: a. ecotourism b. soft loans for business planning to implement environmental products c. the use of recycled wood products in the manufacture of new products d.

What is an organism that lives on or in another organism and uses the other organism for nourishment to the detriment of the host organism?

If I turn my computer off at least once a week, it will run faster. What is the independent variable? What is the dependent variable? What are some controlled variables?