Unlike secondary succession, primary succession a. occurs in an area where existing communities still exist. b. has the challenge of occuring in areas where no community exists at all. c. proceeds at a much faster rate. d. leads to an increased number of different species over time.

Sperm pass through the and connect to a short ejaculatory duct. vas deferens prostrates seminiferous tubules none of the above

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Explain the significance of the increased cell specialization of the volvocine line