(Q).
You are presented with the question "_causes harm to living things" and the following answer choices: - Nematoda - organisms - stress - pesticide - nutrients - stimuli - animals - moisture Now knowing that poison causes harm to living things and toxins or poisons are a stress, choose the best answer.
(A).
stress

(Q).
You are presented with the question "what can blow air?" and the following answer choices: - wind - gravity - density - volume - humans - heat energy - some mammals - referees Now knowing that blowing air into a whistle causes air to vibrate inside the whistle and referee's whistle blows, choose the best answer.
(A).
referees

(Q).
You are presented with the question "A molecule that causes antibody production is found on what?" and the following answer choices: - solid, liquid, gas - organs - Epidermis - aqueous solution - the skin - animals - cancer cells - humans Now knowing that antigens are found on cancer cells and the cells of transplanted organs and antigens can be any molecule that causes antibody production, choose the best answer.
(A).
cancer cells