Roundworms have a feeding tube through which wastes exit. True or False?

When animals share many classification designations, the animals have a high degree of relatedness. which species are the most closely related according to the dichotomous key shown above?

Why do plants need two transport systems?

The composition of a star can be identified by A. its apparent magnitude B. the size of the star. C. the lines in its spectrum. D. the intensity of its radiation.

Many cycles on Earth involve the conservation of matter. Which of the following is NOT a major cycle on Earth? A. air cycle B. rock cycle C. carbon cycle D. nitrogen cycle

Excess nitrogen can lead to algal blooms and the death of fish. Which characteristic of nitrogen causes this problem? A. Nitrogen is essential for growth in producers. B. Nitrogen is essential for the salinity of water. C.

Which kind of volcano is most likely to form from this plate movement

Which type of short term contraceptive method is generally more effective than others? barrier hormonal natural family planning withdrawal

Water covers over two - thirds of Earth's surface. Yet water shortages are a major problem for many people around the world. Why do you think this is the case?

Which of the following is not true about cells? 1) All living thing begins life as a single cell. 2) The cell is the basic unit of the structure and function of life. 3) It takes many cells to make a complex organism.

Is mold that grows on bread a decomposer a producer or a consumer