Which of the following is a common misconception about sti transmission?
a. some stis can be transmitted by oral contact.
b. some stis can be transmitted by skin-to-skin contact.
c. all stis require medication or a doctor's treatment.
d. all stis can only be transmitted through intercourse.

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

Explain what you know about the cause of mental illnesses.

The hydrologic, carbon, nitrogen, and phosphorus cycles are essential to the . this is why they are called biogeochemical cycles.