Which statement about the U. S. Clean Water Act is true?

A) it was the first clean water act in U. S. history.

B) it was generally considered a failure.

C) it made exemptions for many farm activities

D) it became obsolete in the 2000s

Name at least three traits that are a result of polygenic inheritance.

The mouse population of an area decreased last year. Which abiotic factor would explain the population decrease? A) a decrease in rainfall B) a fatal bacterial disease C) an increase in owl population D) competition among the mice for food

Explain why skin is an organ

Hess wrote that hot magma rose up into the rift valley at the mid-ocean ridges. The lava oozed up and forced the existing seafloor away from the rift in opposite directions. Hess called this idea seafloor drifting True or False

On which thickly clouded planet has radar mapping revealed a varied topography consisting of plains, highlands, and thousands of volcanic structures? A. Venus B. Jupiter C. Mercury D. Neptune

LaKeisha stepped on a piece of glass and quickly pulled her foot away from that sharp object. Which of the following are responsible for sending a message to the muscles in LaKeisha's foot, resulting in her pulling her foot away from the piece of

In which direction does the building of the new strand proceed?

A knowledge of. science is essential in many different careers such as those of geologist meteorologists astronomers or oceangraphers

Describe how abread mould obtain nutrients

From the esophagus to the anal canal, the walls of every organ of the alimentary canal are made up of the same four basic layers. Arrange them in order from the lumen. A. muscularis externa, serosa, mucosa, and submucosa B.