Apopulation of snakes has 900 individuals. they have a death rate of 30 per year and a birth rate of 20 per year. assuming 6 snakes migrate into the population and 3 migrate out of the population per year, how many individuals would there be after the first year? (to answer, write numerals in the box below.)

Donde se encuentra el adn nuclear en un organismo eucariota?

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.