What is humus?

A) A term to describe soil that is not fertile.

B) The broken down remains of plants and animals.

C) A type of soil that cannot retain water for long.

D) A mixture of man-made articles such as plastic and glass.

What demographic changes are occurring in the us?

Alexis, a middle-aged woman, is very moody and becomes irritable at the slightest provocation. Recently, her waist size has increased remarkably, and she has joint and muscle aches very often.

The most abundant producer in aquatic ecosystems are

A mutation in GLUT4 changes the Kt value from 5 mM (wild type) to 3 mM (mutant). The velocity of glucose entry into a mutant cell would be higher than a cell expressing the wild type version at a blood glucose concentration of 5mM. A) TRUE. B) FALSE.

The study of which trees monkeys feed in is part of the life sciences true or false

What does it mean for an organism to be anaerobic? a. It is poisoned by water. b. It lives in salty environments. c. It is poisoned by oxygen. d. It produces large amounts of oxygen.

Chorionic villi sampling (CVS) is a test to determine whether fetal cells have genetic abnormalities and can be performed as early as 8 weeks. Chorionic villi cells are removed using a small tube that is passed through the cervix.

The largest carbon source is

What do sensory neurons do? A. Detect, feel, and smell B. Connect the brain to the spinal cord C. Connect parts of the brain D. Control muscle movement

Which of these scenarios illustrates natural selection due to behavior