In order to reproduce, female sex cells must be fertilized by a. sperm b. androgens c. testosterone d. all of the above

Based on the results of this study, what questions remain unanswered? how can these questions guide future research

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers