Q: Q: What system is responsible for defending your body against sickness? Read this paragraph and choose the correct option from the provided answers: Infectious diseases are diseases that spread from person to person. They are caused by pathogens such as bacteria, viruses or fungi. What can you do to avoid infectious diseases? Eating right and getting plenty of sleep are a good start. These habits will help keep your immune system healthy. With a healthy immune system, you will be able to fight off many pathogens. The next best way is to avoid pathogens. Though this is difficult, there are steps you can take to limit your exposure to pathogens. Choices: - nervous system - circulatory system - digestion system - immune system A:
A: immune system

Q: Q: What explains why two different species cannot occupy the same niche in the same place for very long? Read this paragraph and choose the correct option from the provided answers: A given habitat may contain many different species, but each species must have a different niche. Two different species cannot occupy the same niche in the same place for very long. This is known as the competitive exclusion principle . If two species were to occupy the same niche, what do you think would happen? They would compete with one another for the same food and other resources in the environment. Eventually, one species would be likely to outcompete and replace the other. Choices: - evolution - natural selection - survival exclusion princple - competive exclusion princple A:
A: competive exclusion princple

Q: Q: What are the three types of symbiotic relationships? Read this paragraph and choose the correct option from the provided answers: Symbiosis describes a close and long-term relationship between different species. At least one species will benefit in a symbiotic relationship. These relationships are often necessary for the survival of one or both organisms. There are three types of symbiotic relationships: mutualism, communalism, and parasitism. Choices: - pledgism, truism, greenism - symbiosis , communalism , parasitism - altruism, conservatism, communalism - mutualism, communalism, parasitism A:
A: mutualism, communalism, parasitism

Q: Q: Boiling points increase with which kind of mass? Read this paragraph and choose the correct option from the provided answers: Carboxylic acids have high boiling points compared to other substances of comparable molar mass. Boiling points increase with molar mass. Choices: - lipid mass - universal mass - protons mass - molar mass A:
A: molar mass