Does mammals have fins

What is related to air pollution in Mexico City? A. Collecting natural Gas B. Burning fossil fuels C. Using biofuels D. Using hydro power

What is the effect of a mutation?

How would a rapid increase in emigration affect a country's population growth rate? keep it relatively stable cause an increase in growth rate cause a decrease in growth rate cause a sharp increase and then a decrease in the growth rate

Scientists then used microscopes to develop which of the following major scientific theories? A. The theory of thermodynamics B. The cell theory C. The theory of plate tectonics D. The big bang theory

You find a multi-legged animal in your backyard and want to determine if it is a centipede or a millipede. You consult a myriapodologist who quickly tells you that you have found a millipede.

Why did the combination of corn and beans prove so crucial to the diet of early americans? a. beans neutralized an otherwise toxic compound in archaic forms of corn. b.

The double fortification process involves adding which nutrient (s) to salt?

A virus? A). Contains RNA and DNA in a protein coat. B). Is surrounded by a nucleic acid envelope. C). Contains RNA or DNA in a protein coat. D). Consists of a protein surrounded by a nucleic acid coat.

Which of the following will a bacterium produce when a human gene is added to its genome? A) human plasmids that can be isolated from the bacterium B) The human protein coded for by the human gene C) a protein made up of both human and bacterial

Which type of mutation occurs reproductive cells and can be passed to offspring