What are two types of evidence that evolution has taken place?

What causes the different sessions on earth

Suggest a human activity that could upset the balance in this ecosystems. Explain your answer.

Suppose you are a chemist lost in the desert and desperately in need of water. If you had a chemistry set available, which type of reaction could you use to make water?

Which of the following best describes pollution discharged by cruise ships? a. Cruise ships only discharge sewage and liquid wastes. b. Cruise ships discharge sewage, solid, liquid, and air pollution. c.

Explain the difference between cell division and cell differentiation. Does either process change the DNA?

What type cell undergoes meiosis?

What type of instrument measures seismic waves? A. Mercalli scale B. Seismogram C. Seismic scale D. Seismometer

Which of the following is composed of two layers of lipids and protects the cell from the surrounding environment? Select one: a. cytoplasm b. cholesterol c. cell membrane d. carbohydrate

Predict how the thickness of cuticle and the number of stomata differ in plants from wet habitats versus dry habitats. drag the appropriate items to their respective bins.

Dementia is defined as