Which best characterizes the precambrian era?

a. abundant plants and animalsb. dinosaursc. small, one-celled organisms and primitive jellyfishd. extensive mountain building?

What is the structural support of a jellyfish?

Which fossil fuel releases the least amount of carbon dioxide into the air in a year

What type of produce has been Genetically Modified (GMO) with a fish gene?

Who was the Amelia Earhart?

For the increasingly warmer temperatures in Siberia. Many scientists blame a low altitude b. regional climate variation c. permafrost d. global warming

Although protein was part of the composition of the foods in this experiment, it was not the main macromolecule component of any of the foods.

Which of the following statements is true about protein synthesis in prokaryotes? A) Extensive RNA processing is required before prokaryotic transcripts can be translated. B) Translation can begin while transcription is still in progress.

In a plant cell, what organelles play a role in structure for the whole plant?

How is DNA used as evidence for evolution? A. All species have the same genes. B. All species have the same amount of DNA. C. All species have the same genetic code. D. All species have the same number of genes.

How does the loss of bicarbonate due to diarrhea increase the protons in the blood?