Answer:
A. Protein Spikes
Explanation:
A viruses are defined as the quintessential parasites in the living world. They are a chain of the nucleic acids that lives in a host cell. Without the host cell, all the viruses cannot carry out their life sustaining activities or functions. They are always housed in a protein layer or a protein coat. All the viruses contains the RNA or the DNA. The protein spikes which is on the outside of a virus are "sticky" and they are attracted to the specific molecules of the outside of an animal cells.
An approach to systematics in which organisms are placed into groups called clades based primarily on common descent. A group of species that includes an ancestral species and all its descendants. Pertaining to a group of taxa that consists of a common ancestor and all of its descendants. It is equivalent to a clade.
Answer:
Carbon dioxide (CO2) is also an important greenhouse gas. It has a long lifetime in Earth's atmosphere. Carbon dioxide strongly absorbs energy with a wavelength of 15 μm (micrometers). ... Methane (CH4) is 30 times stronger than carbon dioxide as an absorber of infrared radiation
so the correct answer is infrared radiation
Responding to the environment.
