Which is an abiotic factor that affects a freshwater ecosystem?

A. The number of fish

B. The competition for food

C. The amount of light

D. The number of predators

What is the prevailing westerlies

Students in a high school Marine Science class are learning about the scientific process. Four students were asked to write a testable prediction about ocean temperature. Their responses are shown in the chart.

Another term for the leaf's stake is. Select one: a. Stem b. Flower c. Petiole d. Axillary bud

List the periods in which there were mass extinctions, and if possible explain why they occurred

What is the size range of a eukaryotic cell

What system includes oceans, lakes, rivers, and groundwater? a. geosphere b. hydrosphere c. atmosphere d. biosphere

Fungal spores a. are only asexually produced. b. cannot be seen in a light microscope. c. are used to identify fungi. d. are produced by molds but not by yeasts. e. are only produced under harmful environmental conditions

Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm.

What's the function of rough er

Milo is observing the things around his family's farm. He writes down four different resources and whether he thinks they are renewable or nonrenewable. The table below shows his notes.