C. it cannot be created nor destroyed only transferred
The system that is made up of those is called the Respiratory System
Answer: A: Pine, Cedar and Mango.
B: Pine and Cedar
C: Mango, Cedar and Elm
D: Pine and Cedar
Explanation: Evergreens plants always have there leaves on regardless of the season, because their roots go very deep into the soil getting water and nutrients far below the levels other tap roots can go, they are mainly found in the rain forest region that have abundance of water. Example, Mango
Deciduous trees are usually found at desert places that dont always have water, so they lose their leaves during etreme weather to reduce the rate of evaporation of water on its surface. Example, Maple.
Hardwood: These are flowering plants. they usually have broad leaves and nuts. example, Mahogany.
Conifers: These are cone bearing seed plants. they are perennial and woody plants. Example Pine.
Classifying things by observation can best be done by using a : Taxon
Taxon divided organisms into different groups based on their unique similarities, which is the best way to classify things if you're doing it by observation.