Evolution by natural selection is

A) a process that has occurred only in the past.
B) currently occurring but only in scientific laboratories.
C) constantly occurring at the same rate in all organisms.
D) a rare event that has never been observed by scientists.
E) a process that occurs as a result of differences in fitness.


E

Biology & Microbiology

You might also like to view...

Why are antibiotics of little value by themselves in the treatment of cholera?

What will be an ideal response?

Biology & Microbiology

Recognition or "self" proteins on the surface of your cells are called ____

a. T cell receptors (TCRs) b. cytokines c. major histocompatibility complex (MHC) markers d. complements e. PAMPs

Biology & Microbiology

Which of the following is not an effect of deforestation?

1.destruction of forest organisms 2.higher risk of flooding 3.higher risk of landslides 4.increased productivity

Biology & Microbiology

Valves, which are found ________, maintain the unidirectional movement of blood, thereby facilitating the return of blood to the heart.

A) only in central veins B) in all venules C) only in peripheral veins D) only in arteries E) in all veins

Biology & Microbiology