Answer:
An atom is made out of three different sub-atomic particles. Protons have a positive charge and lie in the nucleus of the atom. Electrons have a negative charge and are seen whizzing around the nucleus. Neutrons have a neutral charge and lie in the nucleus with the protons. The nucleus is surrounded by rings carrying the electrons.
When was the last time you saw or used a plant? Most likely you can gaze out a window and see a flower or a tree.
The major method of transmitting of infectious disease when using the public transportation is by breathing because many people inhales and exhales the same air in a confined space that is also air conditioned. that is why microorganisms can be easily be transferred
<span>Cephalochordates are animals from chordate subphylum which are distinguised to have all the characteristics of a chordate from their larval stage and is true to their adulthood. They are segmented marine animals having elongated bodies with notochords extended from head to tail. The notochord of these animals are persistently present throughout their lives. The answer to this question is letter C. "Notochord is present throughout their lives."</span>
The correct answer is chromosomal mutations
