Definitely D. Because we just learned about this in science
Some ways in which communicable diseases spread are by: physical contact with an infected person, such as through touch (staphylococcus), sexual intercourse (gonorrhea, HIV), fecal/oral transmission (hepatitis A), or droplets (influenza, TB) travel through the air, such as tuberculosis or measles.
Answer:
Take medicine to destroy the germs.
Avoid contact with other people's bodily fluids.
Eat healthful foods such as fruits and vegetables.
Explanation:
For the spread of disease, there is usually a host who bears the infectious agent, the agent exits through a port of exit from the host, is carried by a mode of transmission, then enters a susceptible second host through a port of entry. To stop transmission, stopping the infectious agent can include;
- Stopping the agent from leaving the host through port of exit – e.g quarantine the patient
- Curtailing the modes of transmission – e.g killing disease vectors
- Protecting the ports of entry in the susceptible second potential host – e.g by improving immunity
The answer is; SET B
Polar molecules interact well with water because there are charged. Water molecules are partially charged (the oxygen end is partially negative while the hydrogen end is partially positive). Therefore polar molecules can interact stably with charged molecules. The hydrophobic end is non-polar and is ‘water-hating’. When mixed with water, the non-polar region clumps up into globules so they don’t interact with water.
It allows them to study and analyze the species.
