(Question)
You are presented with the question "deoxygenated blood is carried where?" and the following answer choices: - to our heart - during the day - animal transport - our planet - critical organs - mouth of rivers - humans - organs Now knowing that veins generally carry deoxygenated blood and veins carry blood to our heart, choose the best answer.
(Answer)
to our heart

(Question)
You are presented with the question "what do pupils get when reacting to strong stimuli?" and the following answer choices: - smaller - Energy. - grow - Energy - It expands - expelled - properties - nerves Now knowing that light enters the eye through an opening called the pupil and if there is a strong light, the pupil gets smaller, choose the best answer.
(Answer)
smaller

(Question)
You are presented with the question "What comes from burning coal and oil dissolving in water in the atmosphere?" and the following answer choices: - Plant growth is reduced - A transportation fuel - Generating heat - harmful substances - DNA damage and mutations - A compound that donates proton - ozone depletion - Mutagenic chemicals Now knowing that gases from burning coal and oil dissolving in water in the atmosphere causes acid rain and an acid is defined as a compound which can donate a proton , choose the best answer.
(Answer)
A compound that donates proton