Explain why you cannot draw a conclusion about the effect of one variable in an investigation when the other key variables are not controlled

Which is a safe practice for handling chemicals in a lab investigation?

Which is the protist kingdom sometimes called the odds and ends kingdom

Colorblindness is more common in males than in females because the allele for colorblindness is A dominant and located on the X chromosome. B dominant and located on the Y chromosome. C recessive and located on the X chromosome.

Both whales and clown fish live in oceans. Whales are classified as mammals and clown fish are classified as fish. Which characteristic makes whales different from clown fish? A) Clown fish give birth to babies while whales lay eggs.

What is the role of membranes in DNA transcription?

What is another term for survival of the fittest? A. Natural selection B. Adaptation c. Genetic mutation D. Variation

Which of the following could be said about ecological footprints? A. the average ecological footprints for various countries are nearly identical. B.

The reactants of cellular respiration are carbon dioxide. glucose. oxygen. water.

Which of the five kingdoms in Whittaker's phylogenetic tree are prokaryotic, and which are eukaryotic?

Are there multiple types of bacterial colonies in anna's sample? yes or no. explain your reasoning.