When metal conducts heat , that metal expands, and steel is the most useful of metals. Given these facts, what expands when it conducts heat among the following options: - lipids - fabric - glass - Energy. - steel - cement - a prism - plastic
steel

Balance is the ability to sense and maintain body position, and people fall when they lose their sense of balance. Given these facts, the ability to sense and maintain body position prevents people what among the following options: - falling - death - illness - starving - blindness - disease - depression - sweating
falling

Q: Afire requires oxygen to burn, and oxygen-enriched air is a fire hazard because the burning rate of combustible materials is increased. Given these facts, how do you increase the burn rate among the following options: - an electric stove - exercise - burn wet materials - friction - add more oxygen - decrease amount of fuel - a hydraulic system - decrease the oxygen
A: add more oxygen

Question: Communities consist of populations of different species, and each species of animal is unique. Given these facts, what do communities consist of populations of among the following options: - the moon and the stars - just bacteria - peachleaf willow - dogs only - swamp vegetation - huddle together - Most plants - different animals
Answer: different animals

*Question*
Pesticides can cause pollution, and biologists have shown that light pollution harms animals. Given these facts, what can harm animals among the following options: - pesticides - bacteria - hay - cigarettes - amoebae - grain - manure - mines
**Answer**
pesticides

(Q).
Waxy leaves are used for storing water by some plants, and orchids often have fleshy pods and waxy leaves which can store water. Given these facts, where do orchids keep water among the following options: - In their leaves - dormant state - it needs them - by indirect light - By coral exoskeletons - near the shoreline - cellulose - they body they live in
(A).
In their leaves