Fact 1: Many corals secrete an exoskeleton that builds up to become a coral reef. Fact 2: Hard corals build by secreting calcium carbonate skeletons. Given the two facts above, answer the question "What constructs an exoskeleton using calcium carbonate?" with the following options: - animals - amoeba - sharks - insects - mammals - Man - coral - bats
coral

(Question)
Fact 1: Boiling means change from a liquid into a gas by adding heat energy. Fact 2: Boiling is the very rapid conversion of a liquid into vapor by the violent evolution of bubbles. Given the two facts above, answer the question "What means a change from a liquid into a gas by adding heat energy?" with the following options: - Evaporation of water - heat is produced - violent evolution of bubbles - igniting fuel and oxidiser - Water expanding - a hemisphere is tilted away from the sun - evaporative cooling - degrees Celsius
(Answer)
violent evolution of bubbles

Ques: Fact 1: Phase changes do not change mass. Fact 2: Melting is a phase change. Given the two facts above, answer the question "What happening to something will not change its mass?" with the following options: - growing - Dilution - energy - doubling - melting - It expands - Energy. - shrinking
Ans: melting

(Q).
Fact 1: Most modern gymnosperms are trees with woody trunks. Fact 2: Conifers are examples of gymnosperms. Given the two facts above, answer the question "What is a tree with a woody trunk?" with the following options: - conifer - orchids - plants - trees - less water - vines - lycophytes - ferns
(A).
conifer

Ques:Fact 1: Sweating reduces body heat. Fact 2: Heat cramps are caused by sweating. Given the two facts above, answer the question "what can cause cramps?" with the following options: - energy usage - Smoking - sweating - Acids - acetic acid - electricity - burning coal - cigarettes

Ans:sweating

Fact 1: Ethanol is produced by alcoholic fermentation of the glucose in corn or other plants. Fact 2: Ethanol depresses neuronal excitability. Given the two facts above, answer the question "what effect does alcoholic fermentation of the glucose in corn or other plants have?" with the following options: - kills people - depress neuronal excitability - it helps plants in growing - negative impact - corn on the cob - changes density - Generating heat - Plant growth is reduced
depress neuronal excitability