What is a diatom? what makes them different from other algae?

Is a grasshopper a heterotroph or autotroph?

During which process is energy released 1. external respiration 2. internal respiration

What is the role of the uterus in the development of the fetus and the placenta

Will there be any snow if water couldnt evaporate

The ability of one or more organisms in a population to tolerate a chemical such as a pesticide or antibiotic designed to kill it and to reproduce more rapidly than the members of the population that do not have such genetic traits is called?

What is the largest available source of fresh water for drinking in the hydrosphere? A. Groundwater B. Oceans C. Rivers D. Glaciers

What is an abiotic factor that can be found in a rain forest ecosystem

Explain Why, in winter, most of the meltwater produced by salting the roads will not infiltrate the soil

Which processes are directly responsible for the presence of the different species of wheat and corn shown in the diagram above?

Which diseases are caused by viral infection? Anthrax West Nile Measles Hepatitis A Chicken Pox Tetanus Rabies Bubonic Plague Influenza (flu) Hepatitis B Mononucleosis Gonorrhea Lyme Disease Cholera Whopping Cough Common Cold