They may have all the same physical properites.
B.
They may have different physical properties.
C.
They always have the exact same streak
D.
They always have the exact same hardness.
Answer:
The Lymphatic System
Explanation:
The lymphatic system
B) nitrogen fixation
C) genetic variation.
D) genetic engineering.
Antibiotic resistance in bacteria is the result of genetic variation.
DNA sequence variations among members of a population are referred to as genetic variation. Sperm and egg cells, as well as somatic (all other) cells, are subject to variation.
Only variation that develops in germ cells can be passed from person to person and hence influence population dynamics and, in turn, evolution.
Genetic variety first appeared as a result of mutations. A mutation is a type of DNA sequence change that is permanent. When a mistake in DNA replication occurs and is not fixed by DNA repair enzymes, de novo (new) mutations take place.
Therefore, Antibiotic resistance in bacteria is the result of genetic variation.
To learn more about Genetic variation, refer to the link:
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Answer:
antibodies are responsible for most antiviral activity in serum
Answer:
The antibodies
Explanation: