MgCl2 is a ionic compound because it is formed by a metal (Mg) and a non-metal (Cl)
Answer:
A solution
Explanation:
The solute is the substance being dissolved by another substance
Answer:
C
Explanation:
an index fossil is a fossil from a very short-lived, geographically widespread species known to exist during a specific interval of geological time.
The purpose of the uninoculated control tubes used in this test is that two uninoculated control tubes are needed to show the results of the medium in both aerobic and anaerobic environments. It is used to show it is sterile and also as a color comparison, used also to show that the medium remains green under both conditions.
