Some white powder from your kitchen fizzes when you put it into vinegar why is this a chemical reaction

Suppose you were standing on a scale in an elevator in a free fall. what would the scale read?

Which is a degenerative joint disease in which joint cartilage is gradually lost due to a combination of aging, obesity, wear and abrasion of the joints?

Identify whether the following statements are true or false. Organisms in a population must compete for resources in order to survive. The best equipped organisms survive. Organisms of the same species are equipped with the same survival skills.

In cellular respirAtion series of anaerobic chemical reactions in the cytoplasm that break Down glucose into pyruvic acid forms a net profit of two ATP molecules

A population is best represented by

When s. marcescens, a bacterium, is grown in a refrigerator, it produces red-colored colonies. however, if the bacterium is grown at room temperature, the colonies are white. the best explanation for this situation is that?

A researcher is studying coat color in mice. Wild-type fur in mice is brown. Three pure-breeding strains of mice with white fur have been isolated. The strains are called milky, blanc, and weiss. White fur is a recessive trait in each strain.

Order the taxa from largest (first) to smallest (eighth). 1. first kingdom 2. second species 3. third genus 4. fourth family 5. fifth class 6. sixth domain 7. seventh phylum/division 8. eighth order

Describe jean Baptiste Lamarck's idea of evolution

Explain why food needs to be digested before cells can use it for energy.