Answer:
1. There is a small sample of the disease that's being tried to prevent so that the body can get used to fighting it.
2. In the vaccine there is a small sample of a disease that the vaccine is being used to prevent. The white blood cells fight harmful bacteria and so prevent diseases.
3. A vaccine works by training the immune system to fight viruses or bacteria.
4. The antigenic variability of the virus and other viruses and bacteria acts as infective agents.
Krill, snails and abalones are primary consumers
Answer: Chemoreceptors
Explanation:
It is Chemoreceptors because Chemoreceptors are receptors found in the pharynx and oral cavity that tranduces chemical substances or detect stimulus and send it to the brain and it is converted to biological signal. It is sensitive to chemicals like carbondioxide and detect changes in normal environment for carbondioxide increase or reduction in oxygen in the bloof and then send it to the brain for interpretation. Chemical changes I their environment stimulate them.
Everything but subjective reasoning is part of the scientific method
Density=mass/volume
The volume of the object is the amount of water it displaced
