1. Parasites
2. herbivores
3. phagocytosis
4. Plant
5. oxygen (O2)
6. gills
7. open
8. urea
9. Single-loop circulatory systems have one direction of blood flow. Typically in fish, oxygen is absorbed in the gills, flows in blood to the body organs, and back to the heart, which pumps it directly back to the gills. In double-loop circulatory systems, the heart has multiples of each chamber. Part of the heart pumps blood to the lungs, to get oxygen. This blood flows back to a different chamber where it then gets pumped to the body. Once its oxygen has been used up, it goes back to the heart to be pumped all over again to the lungs.
10. Freshwater animals have lower water and higher salt concentrations than the environment in their cells. This means water constantly tries to diffuse into the animals, which can bloat them. They have special cell processes that remove extra water.
pennfoster
Answer:
nonnative species
Explanation:
just learned about it on Edge
Answer;
B. Water purification programs
Explanation;
The goal of hygiene promotion is to help people to understand and develop good hygiene practices, so as to prevent disease and promote positive attitudes towards cleanliness.
Hygiene promotion encompasses a systematic attempt to adequately promote personal, domestic, environmental and food hygiene practices that prevent or mitigate the transmission of diseases. Water purification programs is among the government programs that encourages hygiene practices.
Answer:
Explanition:
The immune system is made up of special organs, cells and chemicals that fight infection (microbes). The main parts of the immune system are: white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow.
Answer:B.
It was used to prove that smoking causes health problems.
Explanation:
