Q: If estimating the age of trees can be used in reviewing earthquake history, then estimating the age of trees can be used for what? Answer choices: - genetic diversity - they body they live in - earthquake history - food and shelter - gardening - important habitats - bird watching - recreation
A: earthquake history

Q: If gases from burning coal and oil dissolving in water in the atmosphere kills trees, then what does gases from burning coal and oil dissolving in water in the atmosphere do? Answer choices: - chemical changes - saves trees - forms diamonds - vaporization - heating liquids - kills trees - weathering - Pollution
A: kills trees

Q: If some touch receptors sense differences in the amount of heat, then what do some touch receptors sense differences in? Answer choices: - voltage - visible energy - fingers - refraction of light - gravity shifts - amount of heat - the skin - change in density
A: amount of heat

Q: If nutrients are molecules, then what are nutrients, basically? Answer choices: - nucleus - protoplasm - glucose - allow growth - cells - roots - health - molecules
A: molecules