A bacteria culture starts with 200 bacteria and in 1 hour contains 400 bacteria. How many hours does it take to reach 2000 bacteria?

Work is accomplished only when an applied force moves on object true or false

The irganisms found in rivers and streams vary based on location

List two alternative futures for cells when they reach their size limitations

If a steam that is septic (anaerobic) receives further human waste containing carbon, nitrogen and sulfur containing materials, what does the carbon become, the nitrogen, and finally the sulfur?

Why do water droplers firm on the outside of a glass of ice water?

Which of the following is not an example of a heterotroph

Coral reefs only form in ocean waters between 30 N and 30 S. The reefs are confined to shallow water because?

Cyclins are a family of closely related proteins that a. regulate the cell cycle b. cause cancer c. produce lipids

What could be the blood type of the unknown person in row one of the diagram?

Danny has taken a cross section of a seed. Which of the following are the parts that he will see? pollen grain, sperm, and egg stored food, flower, and pollen grain seed coat, stored food, and an embryo cone, zygote, and seed coat