Q: The secondary wall contains _________ , a secondary cell component in plant cells that have completed cell growth/expansion. Choices: - cytoplasm - glucogen - cellulose - lignin A:
lignin

(Question)
Q: Zinc reacting with hydrochloric acid produces bubbles of which gas? Choices: - carbon - helium - mustard - hydrogen A:
(Answer)
hydrogen

Ques: Q: What area beneath the earth's surface do magma collects? Choices: - hot chambers - underneath chambers - erosion chambers - magma chambers A:
Ans: magma chambers

(Q).
Q: Molds and casts usually form in which type of rock? Choices: - igneous - metamorphic - crystalline - sedimentary A:
(A).
sedimentary

Ques:Q: How many people die from air pollution each year? Choices: - 14 million - 17 million - 5 million - 22 million A:

Ans:22 million

Ques: Q: What is the boiling and freezing point of water in celcius? Choices: - 100 degrees c and 32 degrees c - 212 degrees c and 0 degrees c - 212 degrees c and 32 degrees c - 100 degrees c and 0 degrees c A:
Ans:
100 degrees c and 0 degrees c