1. As cells are pushed from the deeper portion of the epidermis toward the surface a. they divide continually.
b. their supply of nutrients improves.
c. they tend to die.
a. they become dermal cells.

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land