Calculate the concentration of an ethyl alcohol solution made up of 100 cm 3 of ethyl alcohol and 400 cm 3 of water.​

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.

The basic kind of life cycle found in the simplest animals is: haplontic or diplontic

Does solar energy ever run out? brainliest