Which of the following lists the levels of an ecosystem in order from largest to smallest?

A. population, organism, community, ecosystem
B. ecosystem, community, organism, population
C. organism, community, population, ecosystem
D. ecosystem, community, population, organism

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

The triangles are similar. what is the value of x? enter your answer in the box.