Answer:
It is the biological concept of species
Explanation:
In 1970 Mayr stated that "species are formed by groups of potentially intercrossing populations that are reproductively isolated from others". The biological concept of species puts emphasis on existence of barriers that limit the gene flow among groups within the same species
Answer:
C. A new substance has been formed
Explanation:
A chemical change is one of the two types of changes (the other being physical change) in which the chemical composition of the substance (s) is altered. In a chemical change, which is usually IRREVERSIBLE, a new substance formed because there is rearrangement of atoms at the chemical level.
A chemical change is characterized by the following: formation of precipitates, evolution of gas etc. According to the image attached in this question, a blue precipitate is formed after a reaction between two solutions. This can be said to be an example of CHEMICAL CHANGE because it shows that a new substance has been formed.
Answer:
oxygen because oxygen is the life supporting component of the air
Hope this helps mark brainest plz
Garden will have higher oxygen; it is because their would be more lichen due to more greenry & less pollution;