Which two sentences best explain what happens tøsenergy in this/ecosystem?
A. Each ofganism gains energy from its surroundings.
B. Energy is gained as it flows down the pyramid.
C. Each prganism loses energy as body heat.
U
D. Energy is 'lost agt flows through the links in a food chain.

A and b
Hope it works

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

How can one make a supersaturated solution? (apex)

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid