Which factor explains why coal dust is explosive?

temperature

surface area

concentration

addition of catalyst

Which best describes how shared characteristics can be used to identify evolutionary relationships? If organisms have a common ancestor, most of their characteristics will be shared.

What is another word for the food that living things need to grow?

When a seed begins to grow is what

Which feature of a human community is similar to a niche in a biological community? A. Streets B. Neighborhoods C. Jobs D. Farms

Which biome has a plant community dominated by plants that resist drought and store water, and a climate characterized by very little precipition?

In theory the enzymes should work in colder conditions but at a lower rate, why?

Cyanobacteria have been engineered to produce isobutanol directly. What advantage does this have over other alternative biofuels? a. It is an inherently renewable fuel source. b. Multiple processing steps can be avoided. c.

Describe the appearance of dense connective tissue

What us one role that lipids play in the boy

Which meninx surrounding the central nervous system contains blood vessels that nourish the neural tissue?