If pine cones are placed in water, they close up. But they open up in warm and dry conditions. How do pine cones benefit from this characteristic?

True or False: Manatees were not able to discriminate different engine types or boat speeds, explaining why boat trauma is the prime factor in mortality.

Choose the statement that best describes the outcome of the Taft-Hartley Bill of 1947. A. The bill was passed by Congress but died after President Truman quickly vetoed it. B.

Which Type ir organism converts wastes and dead materials into nutrients that can be used by plants

What makes water a polar molecule? Choose 1 answer: It has fully positive and negative charges. It contains ionic bonds. C) It is able to dissolve nonpolar substances. It contains partial positive and negative charges.

Which of the non renewable fuels is the most expensive to use and to manage

Plasma from a sick mouse is filtered across a membrane that has a 200 nm pore size. If the filtrate is still infectious when injected into a healthy mouse, then the pathogen is most likely a (n): -parasitic worm -fungus -virus -bacterium -archaean

Which factor is a population-limiting, density-dependent factor? select one: a. the rapid spread of tuberculosis in heavily populated areas b. a drought that limits food availability c. a heavy flood that destroys a large area around a river d.

What term is defined as the ability to do work?

How do the functions of the skeletal and muscular system differ? A. Muscles provide structure and support to the body, while bones move the muscles. B. Muscles send signals to the body, and bones are responsible for movement. C.

What structures form cytoplasmic channels that connect adjacent plant cells through the cell walls?