Fact 1: Antigens are molecules that the immune system recognizes as foreign to the body. Fact 2: Antibodies are produced to fight antigens. Given the two facts above, answer the question "What happens when the immune system recognizes a foreign substance?" with the following options: - an area swollen with pus - The immune system fails - irradiation - Bacteria dies - Antibodies are formed - major threat to health - Something that causes allergies - Viruses reproduce
Antibodies are formed

(Question)
Fact 1: Pressure receptors are found mainly in the skin. Fact 2: Sensory Receptors A receptor is any structure specialized to detect a stimulus. Given the two facts above, answer the question "Something specialized to detect a stimulus is found mainly where?" with the following options: - fields - humans - bushes - bats - a path - skin - retina - Birds
(Answer)
skin

Ques: Fact 1: Adult worms go through a major transformation to develop reproductive organs. Fact 2: Marine annelid worms have larvae called trochophores that swim about by means of cilia. Given the two facts above, answer the question "Marine annelids can make a swimming larvae called what?" with the following options: - barnacles - survive - graptolites - epidermal - Something to move - a trochophore - fertile - permineralization
Ans: a trochophore

(Q).
Fact 1: Creating paper requires cutting down trees. Fact 2: Trees clean and cool the air. Given the two facts above, answer the question "What does creating paper do?" with the following options: - duplicate itself - Makes the air dirtier - Makes food - Cleans the air - converting electricity to heat - to move people - Plant growth is reduced - Lengthens tree life
(A).
Makes the air dirtier

Ques:Fact 1: Arthropods are the largest phylum of invertebrates. Fact 2: Invertebrates have no backbone. Given the two facts above, answer the question "What have no backbone?" with the following options: - insects - mammals - arthropods - humans - barnacles - fur seals - graptolites - bears

Ans:arthropods

Question: Fact 1: Threatening behavior by predators causes a porcupine to extend its quills. Fact 2: Fishers are one of the few specialized predators on porcupines. Given the two facts above, answer the question "What will a porcupine do when it feels a fisher is displaying threatening behavior?" with the following options: - bite the fisher - decreases its bodily water - Change colors - extend it's quills - kill them - the body's largest organ - back away - fight the fisher
Answer:
extend it's quills