Fact 1: Acid rain has a negative impact on water quality. Fact 2: Acid rain is harmful rain. Given the two facts above, answer the question "what is some rain?" with the following options: - harmful - watershred - streams - rainy - flooding - rivers - Tropical - spring
harmful

Fact 1: Freezing means changing from a liquid into a solid by reducing heat energy. Fact 2: Liquid water holds a huge amount of heat energy and resists changes of state to solid or gas. Given the two facts above, answer the question "What turns a liquid into a solid?" with the following options: - The bending of a ray of light - decreasing liquid - reducing heat energy - Warm air moving into cold air - movement of tectonic plates - keeping current temperature - adding more heat - evaporation
reducing heat energy

Q: Fact 1: Lymphocytes are the key cells involved in the immune response. Fact 2: Antibodies are synthesised by lymphocytes. Given the two facts above, answer the question "What are synthesised by the key cells involved in the immune response?" with the following options: - white - antibiotics - seeds - Energy - antiquated - antivirals - Chemical energy - antibodies
A: antibodies

Question: Fact 1: Temperature changing can cause phase changes. Fact 2: When water goes through the cold induced phase change to produce ice, the ice expands. Given the two facts above, answer the question "Temperature changing can cause what to change to ice?" with the following options: - glass - basalt - skin - heat - diamond - water - Joules - sweat
Answer: water

*Question*
Fact 1: Organisms that live in marine biomes must be adapted to the salt in the water. Fact 2: Salinity is the measure of salts in the water. Given the two facts above, answer the question "Organisms that live in marine biomes must be adapted to what?" with the following options: - Deposition - fish - waves - darkness - salinity - heat or cold - evaporation - Deposition.
**Answer**
salinity

*Question*
Fact 1: Echinoderms use pheromones to communicate with each other. Fact 2: All echinoderms are marine and benthic. Given the two facts above, answer the question "marine and benthic species use pheromones to what?" with the following options: - seed dispersal - produce offspring - life-sustaining - float underwater - defense mechanism - arm each other - communicate with each other - live in marine bays
**Answer**
communicate with each other