Statistics for Enviro Final Soil

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Question	Answer	% Correct
What is a way to restore nutrients to soil?	fertilizer	100%
What are some issues with mining?	leaking of acids/cyanide waster	100%
What is not a key function of soil?	maintaining good weather	100%
What is not a way that humans cause erosion?	not recycling	100%
What is parent material?	rock or minerals from which soil derives	100%
Permeability is...	the rate at which water and air moves from upper to lower soil layers	100%
What is permeability?	The rate at which water and air moves from upper to lower soil layers	100%
How is the parent material of soil formed?	The rock that has slowly broken down into smaller particles by biological, chemical, and physical weathering	100%
What is not a reason why fertilizer is bad for soil?	gets rid of pests	67%
What is the soil profile from the outside to the inside?	humus, topsoil, subsoil, weathered bedrock, bedrock	67%
Soil is a slowly __________ resource that provides most of the nutrients needed for plant growth	renewed	67%
What is the composition of soil?	45% minerals, 25% air, 25% water, 5% organic matter	33%
Soil pH typically ranges from...	2-3	0%
What is one of the biggest issues of desalination?	increase fossil fuel dependence	0%
Why is drip irrigation the best type of irrigation?	it allows for natural floods to irrigate crops	0%