Fact 1: Antigens are molecules that the immune system recognizes as foreign to the body. Fact 2: Bodies are physical entities. Given the two facts above, answer the question "What are molecules that the immune system recognizes as foreign to the physical entity?" with the following options: - bacteria - proteins - antibodies - Allergies - negative - immunities - parasites - antigens
antigens

(Question)
Fact 1: The mass of a planet causes the pull of gravity on that planet. Fact 2: Mass, the amount of matter in an object, is measured in grams. Given the two facts above, answer the question "what part of a planet causes the pull of gravity on that planet?" with the following options: - solid, liquid, gas - layers of fat - barrel-shaped - our star - amount of matter - an external framework - hydrogen and oxygen - It expands
(Answer)
amount of matter

Ques: Fact 1: If a neutral atom loses an electron then an atom with a negative charge will be formed. Fact 2: Ions are neutral atoms. Given the two facts above, answer the question "what can an ion have if it loses an electron?" with the following options: - It becomes dormant - negative charge - kinetic energy - energy barrier - heat energy - Electrical energy - hydrogen and oxygen - activation energy
Ans: negative charge

(Q).
Fact 1: Webbed feet are used for moving faster through water by aquatic animals. Fact 2: All ducks have webbed feet. Given the two facts above, answer the question "ducks can move fast through the water due to their specialized what" with the following options: - feet - speed - size - bills - Limbs - beaks - wings - Tail
(A).
feet

Ques:Fact 1: Thyroid hormones increase the rate of metabolism in cells throughout the body. Fact 2: Hyperthyroidism is an overactive thyroid gland . Given the two facts above, answer the question "What can increase the rate of metabolism in cells throughout the body?" with the following options: - hyperthyroidism - sweating - an electric stove - Power plants - electricity - mitosis - haploid - smoking cigarettes

Ans:hyperthyroidism

Fact 1: Arteries generally carry oxygen-rich blood. Fact 2: Energy levels can plummet due to lack of oxygen-rich red blood cells. Given the two facts above, answer the question "_ are needed to maintain energy levels " with the following options: - Ligaments - follicles - hydration - environment - glucose - pores - exercise - Arteries
Arteries