Answer:
Evolution is a scientific theory used by biologists. It explains how living things change over a long time, and how they have come to be the way they are. ... It is known that living things have changed over time, because their remains can be seen in the rocks. These remains are called 'fossils'.
Answer:
The vertebral column, or spinal column, surrounds and protects the spinal cord, supports the head, and acts as an attachment point for the ribs and muscles of the back and neck.
Explanation:
Answer:
In case of normal prgnancy, Sperm and egg come together for fertilization in Fallopian tubules. After fetrilization the embryo will be implanted in the uterus
Answer:
staphylococci
Explanation:
Gram stain -
it is the method of staining which classify the species of the bacteria into gram - positive and gram - negative .
This method distinguish the bacteria by its physical and chemical properties of the cell well of the bacteria .
1. In case of gram - positive , the stain is of color violet , because to its thick cell wall .
and ,
2. In case of gram - negative , the stain is of pink color , because to thinner cell wall .
The bacterium , which shows Gram - positive coccus after the gram stain is staphylococci .
