What is the substance that enters the earth cycle and does harm to living things

What organelle produces atp during cell respiration

The heart works as A One pump B) Two pumps

Which of the following is a conceptual model that represents the flow of energy through an ecosystem? A. inheritance B. food web C. infiltration D. circulatory system

Which statement is a scientific theory?

Select the correct statement about lymphocytes. Select the correct statement about lymphocytes. B cells produce plasma cells, which secrete antibodies into the blood. T cells are the only form of lymphocyte found in lymphoid tissue.

What is directly responsible for an acquired trait

Which statement best describes a physical change? Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same.

What are catalysts that speed up reactions in living things called? A. Biocatalysts B. Enzymes C. Cellular facilitators D. Polymers

Offspring that are genetically unique are the result of mitotic reproduction. vegetative reproduction. asexual reproduction. sexual reproduction.

Are dinosaurs bones biotic or abiotic