If fisheries practices remain unchanged, how long might it be before all of the world's fisheries collapse?

5 years

50 years

300 years

1,500 years

Which of the following choices is an example of primary succession? A. The combination of low tides and a sand storm create a new sand dune at the beach. Over time, small sprouts appear on the sand dune.

The soil of the temperate forest is often rich in humus. Which statement best explains the presence of humus in the temperate forest?

Which of the following events happened first? -First mammals appeared -Pangaea broke apart -Dinosaurs became extinct -First angiosperms appeared

The coarse adjustment knob may be used in focusing with all objective lenses? True or False

Most aquatic animals conduct internalexternal fertilization

the process of taking material into the cell by means of infoldings of the cell membrane.

What do both the theory of evolution and the cell theory have in common as scientific theories?

You are part of a desert plant research team trying to discover crops that will be productive in arid climates. you discover a plant that produces a hormone under water-deficit conditions that triggers a suite of drought responses.

Cual es la diferencia entre ciencia y biología

What parts of the atmosphere interact?