In a village, if the proportion of individuals who have sickle-cell disease is 0.10, and the population is assumed to be at hardy-weinberg equilibrium, what is the expected frequency of the hbs allele? (hint: what is the genotype of people with sickle-cell disease, and how is that genotype represented in the hardy-weinberg equation? )

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.

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?