Humans add greatly to the carbon cycle by

A. driving cars

B. planting trees

C. conserving energy

D. using solar power

Identify how the deletion of a single nitrogen base in DNA can cause a harmful mutation in an organism. A. Deletion causes chromosomes to join the wrong chromosome. B.

Once an person gets a viral infection the infection can best be treated with A) Vaccinations B) Antibiotics C) Rest

In the late 1800's, mendel predicted the existence of units of hereditary information or factors. what do we call these units of hereditary information today? question 1 options:

Pregnancy, which is characteristically associated with changes in hormone levels in the body is a process tightly regulated by:

Georges Cuvier's discovery of fossils of Irish elk and giant ground sloth:

Usually flowers contain more stamens than pistil. Why?

Choose all the answers that apply. Water: 1. can dissolve most substances 2. has a strong attraction to itself 3. is neither acidic nor basic 4. contracts when it freezes 5. heats up and cools down more quickly than land

A seismic station recorded the P-wave, but no S-waves, from an earthquake because S-waves were what?

In vertebrates, what joins the brain to the rest of the body? A. spinal cord B. medulla oblongata C. peripheral nervous system D. vertebral column

Flagship species are often the focus of successful conservation efforts. What are the advantages and disadvantages of this approach to biodiversity conservation? Do you think the advantages outweigh the disadvantages?