PLS HEL Humus is made of ? (Select all that apply.)
organic material
bedrock
mineral deposits
inorganic material
insects
microorganisms

How can you approximate the number of calories required to keep you in energy balance?

Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell