The major source of free oxygen that supports life on Earth is the ________
Fill in the blank(s) with correct word
atmosphere
You might also like to view...
Energy is important to life forms because
A) all life forms require a continuous supply of it. B) it is required to do work. C) it is required to make specific alterations in the cell. D) both choices A and B E) choices A, B, and C
You need to explain to your study group why the breathing ability of amniotes is different than that of amphibians. Your classmates argue that something like a terrestrial salamander is identical in its breathing mechanism to an amniote. To convince them of the critical breathing innovations of amniotes, you report that in order to breathe as an amniote does, the terrestrial salamander would have to
A. grow scales on its body. B. develop new muscular associations in the ribcage. C. grow lungs. D. reduce the size of its mouth.
Suppose that you have discovered a new mutant in Drosophila melanogaster. What kinds of genetic crosses should you do to determine if the allele causing the mutation is inherited as an autosomal dominant trait, an autosomal recessive trait, or a sex-linked trait?
What will be an ideal response?
Why is it impossible for supernatural, religious, and unexplained phenomena to be explained by biology?
What will be an ideal response?