The tundra :)
hope this helps
Rust is a form of corrosion. It occurs on numerous kinds of metals, iron being one of them. Rust forms when iron oxidizes and absorbs water. Rust is brittle in nature.
Iron on the other hand is a malleable and ductile metal. It rusts because it combines with oxygen present in the air along with moisture.
Properties of oxygen are -it is tasteless, odorless and colorless diatomic gas. It combines with iron in the presence of moisture to form iron oxide or rust.
The trachea serves both functions
Answer:
D. The proportion of mottled fish will increase over time.
Explanation:
In a lake with mottled appearance mottled fish will have advantage over the light brown fishes because light fishes would be easy to be seen by predators.
The proportion of mottled fish will increase over time because of the natural selection. Natural selection is evolutionary mechanism which changes the frequency of a certain allele (consequently, gene and phenotype) by favouring traits (structures, behavior) of an organism that help him survive and reproduce. In the example, above, mottled fish have mottled phenotype that help them survive and reproduce so it will be favorable trait by natural selection.
