What is the purpose of cell division by meiosis?

What would happen in an ecosystem without decomposers?

Which of the following is NOT a characteristic of the nucleus? A. Controls functions of the cell B. Contains DNA in chromosomes C. Is surrounded by the nuclear membrane. D. Are spherical, rod-shaped organelles

Almost all the South American and Central American Indians have Rh-positive, type O blood. Note that there is no significant biological advantage to this blood type. Which mechanism best explains these facts

What igneous rock is generally composed of just one mineral

Which of the following pairs of planets have the most in common? a. Earth and Neptune b. Mercury and Venus c. Venus and Saturn d. Uranus and Mars

A Person ate food X. Food X was not affected by enzymes until it reached the duodenum. What is food X? A) fat B) mineral ion C) starch D) protein

A protein's function is dependent on environmental factors such as ph and temperature. What property of the protein itself dictates a protein's function

The recycling of which compound ensures the continuation of glycolysis under anaerobic conditions?

Which of the following describes a dependent variable

What is true about innate behavior, such as the tendency of bulldogs to want to chase larger animals or cars?