Which would be classified as a pollutant?

argon

nitrogen

water vapor

smoke

What type of pollution is believed to have the most impact on an ecoysystem?

Which of the following is a relatively new disease? A. tuberculosis B. polio C. small pox D. bird flu

What do each of the commensalism organisms get from the relationship

What structures is not part of the central nervous system?

What parts of a fern grow underground

What is a karyotype?

A scientist has been working for 15 years to develop a new type of plastic material, but she has not yet been successful. Which of the following best explains why her work is still a success?

Technology can have good and bad effects. What is a bad effect of spraying pesticides on crops

Can your body make antibodies for pathogens that you have never been in contact with

What allows an organism to better survive in its envirmoment