Lung cancer is most often caused by exposure to tobacco smoke, and lung cancer continues to kill, despite modern therapies. Given these facts, what can kill among the following options: - thoughts - Tobacco smoke - satisfaction - Electric devices - flow of electrons - taxes - animals - heat produced
Tobacco smoke

Along tail can be used to move through water by an animal, and thresher sharks are long-tailed subtropical fish that swim along the surface. Given these facts, what do thresher sharks move through among the following options: - biome - rivers - Fish - oceans - Soil - Sediment - gills - Water
Water

Q: Biofuel is used to produce electricity by burning, and biofuels include ethanol, methanol, biodiesel, biocrude, and methane. Given these facts, what produces electricty by burning among the following options: - cactuses - ethanol - engines - cigars - organisms - cigarettes - Conifers - ferns
A: ethanol

Question: Intense heat has a negative impact on an organism, and bacteria are killed by intense heat for a certain time. Given these facts, what hurts bacteria among the following options: - Hot temperatures - Abnormal cell growth - Cool air - Warm water - Room temperatures - prolactin release - some viruses - Pollution
Answer: Hot temperatures

*Question*
Alight bulb is used for seeing in the dark, and light is emitted by a light bulb. Given these facts, what is emitted light used for among the following options: - electricity - To see in the dark. - activation energy - heat energy - kinetic energy - an electron microscope - major threat to health - Electrical energy
**Answer**
To see in the dark.

(Q).
Some parasites live on the surface of their host, and leeches are external parasites. Given these facts, where do leeches live in relation to their hosts among the following options: - In their beds - body water - competing for resources - In their shoes - loose soil - In their intestines - important habitats - On their surface
(A).
On their surface