Why might a new species be intentionally introduced into an ecosystem science

Which of the following is NOT a trait shared by all living organisms? A. circulation B. digestion C. growth D. photosynthesis

Why is the kingdom Protista not valid under evolutionary classification

Which of the following provides evidence for plate tectonics? a) Atmospheric temperatures b) Coriolis effect c) Ocean currents d) Seafloor features

A property that depends on the amount of matter in the sample is called a?

Select the false statement about diatoms. Diatom deposits are used as mild abrasives. Diatom deposits are used as an insulator. Diatoms provide plants with a source of fertilizer. Diatoms are a primary food source in the earth's aquatic food chain.

Describe the similarities between cellular respiration and fermentation

ATP molecules are needed to start A). The Krebs cycle B). Glycolysis C). The electron transport chain D). None of the above

The notochord is responsible for which function in an embryo? A. processing wastes B. structural support C. respiration D. processing nerve signals

What is the recommended range of weight gain, in lbs, during pregnancy for a normal-weight woman? ?

How can researchers distinguish exons from introns in a segment of DNA? a. The sequence of exons complements mRNA molecules in the cell. b. Only exons contain three-base sequences that can code for amino acids. c. Primers won't bind to introns. d.