Which factor causes gas and dust to pull together during the first stage of star formation?

O density

O gravity

heat

O pressure

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Chlorine is added to kill remaining microorganisms in the water. true or false.

Plant Tissues 1. Plants are prokaryotes/eukaryotes and unicellular/multicellular. (Circle one of each.)

A culture of E. coli is grown on minimal medium plates supplemented with either tryptophan, histidine, or lysine. The resulting colonies are replica plated to three minimal medium plates containing no supplements.

Name the organ where gas exhange takes place

In which location would fishermen most likely catch a greater number of fish? A. at the shoreline B. in an upwelling C. in the intertidal zone D. on the deep-ocean floor

Which of the following planets has the longest orbital period? a. Neptune c. Venus b. Jupiter d. Earth

What type macromolecule is used to make energy carbohydrates lipids proteins nucleic acids

A scientist at the polar ice cap was studying an ice sample from hundred of meters below the surface. While examining the ice, the scientist found some cells from many years ago.

An individual living entity is referred to as what A: Cell B: Organism C: Organ D: Tissue

In sexually reproducing organisms, why are there exactly two chromosomes in each homologous pair?