Sunlight ( the source of energy), air (composed mainly of oxygen and carbon dioxide), water, food (nutrients), temperature (a habitat with a right temperature for different kind of organisms).
Some molecule can pass through but others cannot because they are too large to pass through. This is also called selective permeability.
B. Hydrogen bonds make the positive sides of water molecules stick to each other
Answer:
Soil texture tests would be - determine the percentage of sand, salt, and cay in the soil
nutrient test test would be - determine the amount of plant nutrients available in the soil
Organic matter tests would be - determine the quantity of organic matter in the soil sample
pH tests would be - determine whether soil is acidic or alkaline
Explanation:
If you read each of the drag and drop boxes carefully then you can find some small hints like the word acidic that related o pH and nutrients would go with nutrients.
