Which of the following characteristics of a watershed would act to reduce erosion?

large floodplain areas

soil with a high porosity

a large number of lakes

channels with a low gradient

All natural ecosystems the presence of predators lessons the effects of Among prey

which disorder is degenerative and caused in part by a deficiency of the neurotranmitter acetylcholine?

A certain atom has an atomic number of four. How many protons does it have?

What role does heat energy from the Sun play in influencing ocean currents? A) The higher rate of evaporation at the equator causes water from the poles to move toward the equator.

What kind of tissue lines the inside of hollow organs

Isaac watched a movie where a tsunami washed across the coastline. He related the incident to the geology of the ocean he learned at the school. Which geological phenomenon did Isaac relate to? A. plate tectonics B. upwelling C.

How do mutations affect an organism? A. they may cause the development of a disease-causing allele B. they may cause the development of a more beneficial allele C. they, in some cases, may have no noticeable affect D. all of the above

Scientists make two types of observations that can be either

Of the following muscle types, which has the longest muscle cells and has obvious stripes called striations? Of the following muscle types, which has the longest muscle cells and has obvious stripes called striations? a. cardiac muscle b.

Maya made the diagram below to represent ultraviolet rays, radio waves, gamma rays, and infrared rays based on their properties. Four waves labeled A, B, C, and D are shown.