Which condition is a biotic factor of an aquarium ecosystem? algae growing on the glass

amount of oxygen in the water

temperature of the water

gravel on the bottom of the aquarium

Below is a digram of a hypothetical bill. which of the following must be the missing legislative step in the diagram?

In the spring of 1989, thousands of protesters gathered in tiananmen square in beijing, china. they rallied around a plaster statue that resembled the statue of liberty which they called “the goddess of democracy.” these protestors were seeking a) united states assistance in gaining better health care. b) economic reforms which would allow more chinese exports. c) the boycott of the future olympic games scheduled for beijing. d) political reforms to allow more freedom of speech and political representation.

Select the phrase that best describes "race."a. religiously distinct b. different species c. socially constructed d. factually accurate