Which human activity pollutes lakes and rivers?

a fishing in lakes and rivers

b swimming in lakes and rivers

c discharging wastes into lakes and rivers

d using water for consumption from lakes and rivers

Nonspecific permeases a. allow a variety of molecules to cross the cytoplasmic membrane. b. allow only water to cross the cytoplasmic membrane. c. are not used for passive transport. d. allow only one type of solute to pass through the membrane.

A machine has a mechanical advantage of 5. What force should be applied to the machine to make it apply 3000 N to an object? --a--0.002 N --b--600 N --c--3000 N --d--15,000 N

What are the main differences that separate organisms into phylum Sporozoa?

Limiting Factors that are Density Dependent are affected by the size of the population True or False

What is the base sequence of the strand of DNA from the mRNA it was formed from? AUG/CUU/ACU/GGU/CAA

George has been collecting data for his science fair project which focuses on how different amount of fertilizer affects the growth of bean plants. He tested 5 different plants and gave each a different amount of fertilizer for a period of 10 weeks.

Explain why you can't fully test the lipase activity in tube 5.

A. True b. False: chemicals that become contaminated, dry out, or oxidize can turn unstable and become potentially explosive chemicals (pec)

A long term change in Earth's overall temperature with massive and permanent ramification is called? Climate change Ocean acidifcation Greenhouse gas All of these

Biologists believe that gender differences arise from A. socialization. B. reinforcement and modeling. C. traits that ensured a person's survival and reproduction. D. a process of identification.