Fact 1: Viruses are so small that they can be seen only with an electron microscope. Fact 2: Objects to be viewed are illuminated by electrons in an electron microscope. Given the two facts above, answer the question "What of the following can only be viewed by illuminating electrons? " with the following options: - insects - small animals - eyelashes - Light - an image - fungi - viruses - an object
viruses

Fact 1: Coal is used to produce electricity by burning in coal-fire power stations. Fact 2: Heat is essential to the burning process. Given the two facts above, answer the question "How does coal produce electricity?" with the following options: - It remains dormant - It gets cooled - By rubbing together - chemical reaction - It gets heated up - major threat to health - Through magnetism - heat energy
It gets heated up

Q: Fact 1: Bivalves feed on plankton and nonliving organic matter. Fact 2: Scallops, oysters and clams are bivalves. Given the two facts above, answer the question "what feeds on plankton and nonliving organic matter?" with the following options: - sharks - density - clams - spiders - gills - seaweed - animals - fungi
A: clams

Question: Fact 1: If a habitat can no longer support animals then those animals will move to another area. Fact 2: Animals are dependent on plants for food and habitat. Given the two facts above, answer the question "What needs to be lacking for a creature to change habitat?" with the following options: - warmth - inedible plants - wind - oxygen - nektar - food - O2 - dirt
Answer: food

*Question*
Fact 1: Abreathing mask is used for keeping harmful particles from entering the respiratory system. Fact 2: Sulfate particles irritate the lower respiratory system. Given the two facts above, answer the question "What is one thing a breathing mask can protect you from?" with the following options: - sulfate particles - enormous damage to homes - massive damage - too much air - Dehydration - electromagnetic radiation - choking on food - influenza
**Answer**
sulfate particles

*Question*
Fact 1: Adding salt to a solid decreases the freezing point of that solid. Fact 2: Ice is the solid form of water. Given the two facts above, answer the question "What decreases the freezing point of ice?" with the following options: - hyperthyroidism - increasing temperature - heating liquids - lowering temperature - Dehydration - keeping the temperature steady - adding salt - hypothyroidism
**Answer**
adding salt