By pairing the ringing of the bell with the presentation of meat, pavlov trained dogs to salivate to the sound of a bell even when no meat was presented. in this experiment, the presentation of the meat was the

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.

Is this mrna or rna need need the answer in a hurry