Answer/Explanation:
Wood: E
Freshly brewed black coffee: O
Water: O
Lucky Charms: E
Salt: O
Dirt: E
Sausage and mushroom pizza: E
Air: O
Milk: O
Gold: O
Any mixture that looks the same through the substance is homogenous. The different parts are unable to be visibly seen. (Any periodic element is homogenous)
Any mixture that can be easily determined a mix and cannot be evenly separated or dispersed is heterogenous.
Momentum = mass x velocity 750x25 = 18750 kg-m/s.
I think the answer is a pure substance
Answer:
the plant population over time has decreased. this could make all other organisms above the plant population numbers decrease as well.
Explanation: