An example of a typical pioneer species, that is one that appears in the earliest stages of ecological succession, is

A. weeds.

B. spider.

C. oak tree.

D. humans.

Which of these statements in true of Oparin and Haldane's theory?

As blood flows through the capillaries in the lungs, it drops off and picks up.

Chemical reactions that absorb more energy than they release are called

One quantative issue of global warming

Algae and fungi share a

What does a organism that is still has many cells produce spores and gets food from the enviroment

What are the main features of a eukaryotic cell? How do these features differ from those found in Bacteria and Archaea?2.

What organelle is believed to have once been a free living prokaryote that moved into our cells and became a permanent guest? Select one: a. mitochondria b. nucleus c. cytosol d. none of these

Which of the following BEST explains the importance of using periodization over time? Group of answer choices making things complicated to rehabilitate an injured joint or muscle making your program less boring continuous adaptation and preventing

Cells of the nervous system, including the brain, rely less on blood sugar (glucose) for energy than do other body cells.