The four factors that affect density are: immigration, emigration, density-dependent factors (biotic factors), density-independent factors (abiotic factors).

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What is species? How are new species formed?

What is the process involved in food digestion?

Bacteria are grouped into two catgories reflecting structural features of their cells. Bacteria are classified as Gram-positive or Gram-negative based on whether or not they retain the crystal violet dye used in the Gram stain procedure.

Q1: How are all of the five biogeochemical cycles similar? A) involve fossil fuels. B) All are affected by humans. c) Each is driven in part by bacteria. D) Each has a strong atmospheric component.

Why are so many foods advertised as non-fat and cholesterol-free?

what are the dificulties faced by the people in the rural areas to get portable water. explain in easy tearms

What is the significance of tropism in plant life?

If this site was made by students shouldn't it be a non-profit type thing?

In what form will Susan be able to capture that phosphorous as it is released from the sedimentary rock? phosphorous granules phosphate powder soluble phosphate soluble phosphorous

From what specific substance in air does most of the mass of sugar come from