In water, hydrogen bonds hold together

Contrast flagella and pili. what are their functional roles?

Most nutrient absoprtion occurs here a. large intestine b. jejunum c. duodenum d. stomach e. ileum

What is one characteritic that all three plants share? 1 they all produce 2 they all make fruit 3 thay all make pollen 4 they all make spores

The goal of the Montreal Protocol is to phase out which practice? O A. Using CFCs O B. Emitting ozone C. Selling carbon credits D. Burning fossil fuels

Scientific observations: a. are limited to available equipment used to record a natural phenomenon. b. can be made by instrumentation c. can be made directly by humans d. all of the above e. none of the above

Which best describes the advantage of pest resistance? Pests are mutated and tolerate more. Pesticides become less effective. Farmers do not have to use harsh chemicals to save their crops. Farmers can kills weeds without killing their cash crop.

Which is better 1 big cell or 4 small cells

Describe how scientists can directly measure the movement of tectonic plates

Which of the following is false? A. the graduation rate in a city and the rate of unemployment in a city is a positive correlation B. the cost to mail an envelope and the weight of the envelope is a positive correlation C.

Which material is being cycled? carbon dioxide nitrogen oxygen water