Answer:
a common small fly occurring worldwide in and around human habitation. Its eggs are laid in decaying material, and the fly can be a health hazard due to its contamination of food.
Explanation:
Answer: Weak ties are valuable parts of a social network because: they are more likely to introduce us to new information and ideas.
Microscopes help the scientists to study the microorganisms, the cells, the crystalline structures and the molecular structures, They are one of the most important diagnostic tools when the doctors examine the tissue samples.
