Arid and semiarid lands are prone to desertification because of

Describe the major developments during each trimester of human gestation.

9. Which of the following best sequences the functions of the digestive system from start to finish? A. Absorption, ingestion, digestion, elimination B. Ingestion, digestion, absorption, elimination C. Elimination, absorption, ingestion, digestion D.

The elbow joint is a hinge joint formed by the meeting of the humerus, radius, and ulna. What type of bone marking enables these bones to fit together to form the joint

What would happen to your food web if the phytoplankton died out because of water pollution?

Once a scientific idea is developed, it does not change. right?

Acid precipitation is an agent of what kind of weathering?

When do scientists consider a hypothesis valid? A. when the hypothesis is testable B. when the hypothesis is published in a scientific journal C. when more than one person supports the hypothesis D. when experimentation shows it to be true

In cherry trees, white flowers are dominant over pink flowers. cross a homozygous dominant tree with a purebred recessive tree. what is the phenotypic ratio of the offspring? a. 4 ww b. 4 white selected: c. 4 ww d. 4 pink

What happens to Earth when it is farthest from the sun? A) It moves fastest, B) It stops rotating, C) It moves slowest. D) It stops revolving

Deer ticks are responsible for spreading Lyme disease. This organism, which feeds on the blood of warm-blooded organisms like mice, deer, and humans, is best described as a (1) predator (3) parasite (2) scavenger (4) host