Aplant absorbs 200 j/g of energy from the sun. a cow eats the plant and absorbs 120 j/g of energy. the cow is fed to a group of humans who absorb 70 j/g from the meat. what is the main reason the energy consumption decreases from one consumption to the next? a) some energy is wasted as heat. b) the humans use some energy chewing. c) the plant uses the energy to make sugar. d) the cow uses some energy to make proteins.

Which strategy is an example of how companies may upgrade themselves to meet changing customer preferences? a.doing door-to-door sellingb.using billboards to advertise the productsc. making online shopping services availabled.giving discounts on products

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b.diffusion c. endocytosis d. exocytosisc. endocytosis