What is needed for most chemical reactions and makes up 70% of cells

Living organisms use nitrogen to make a. fat. b. carbohydrates. c. protein. d. water.

True or false: water is an ionic compound

Which statement illustrates how human activities can most directly change the dynamic equilibrium of an ecosystem? Water pollution causes a decrease in fish populations in a river. A hurricane causes a stream to overflow its banks.

How do binary fission and conjugation contribute to the spread of antibiotic resistance in bacteria?

The life of a cell could be summed up in which of the following terms A. Interphase B. Nuclear division C. Mitosis D. Cell cycle

A nurse has provided education for a patient newly diagnosed with hypertension who is just beginning therapy with antihypertensive medications. Which statement by the patient indicates a need for further teaching?

If a cell contains 95% water and is put into a beaker with 100% water, what will happen to the water? What will happen to the cell? on is to tuborgs St

The conclusion in a science text

Which sources would preserve the soft tissues of an early mammal

Agents of erosion drop sediments they are carrying when thileir energy increases or decreases?