The answer you have chosen is the correct one
Two beneficial uses of bacteria include the following:
1. <span>Microbial fermentation helps produce many foods & beverages. Latic acid bacteria are used in producing milk, yogurt, pickles, olives, etc. Bacteria are also involved in making fermentated meats, producing vinegar, chocolate, soy sauce, etc.
2. </span><span>Bacteria can be genetically modified to produce human vaccines like insulin, which is required for diabetic patients.</span>
Some protists<span> are </span>heterotrophs<span>, while others are </span>autotrophs<span>. They cannot be both at the same time.</span>
Many flowers use colours to attract insects
Answer:
index fossils are important for index fossils because
they use them to match up rock layers in certain locations
that may be far apart!
So I think it's C