Answer:
According to the “hygiene hypothesis,” the problem with extremely clean environments is that they fail to provide the necessary exposure to germs required to “educate” the immune system so it can learn to launch its defense responses to infectious organisms. Instead, its defense responses end up being so inadequate that they actually contribute to the development of asthma.
Explanation:
Answer:
if the image has no nucleus shown then it's a prokaryotic cell.....
The answer could be either B or D. Both are important for marine biology. I would have to say D is the best answer though!
Answer:
Because they are not native to a location, they can quickly dominate the wildlife.
Explanation:
- They may not have any predators to keep them in check.
- They basically destroy a food chain which can have a domino affect of killing off other native species that require certain food to survive.
- Some might spread disease.
C. The presence of predators could cause natural selection because it would mean survival of the fittest.
