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:
C human selection is the answer hope this helps
Stars are balls of gasses while planets are gasses and rock
Complex biochemicals found in diverse species probably did not evolve independently which is how they indicate common industry
B
A convergent boundary is an earth where two or more lithospheric plates collide
