Answer:
1.b and 2.A
this made my head hurt im so sry if incorrect
Explanation:
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Biological cell membranes are selectively permeable, which means that the ease and rate of small molecules passing through membranes vary widely. The plasma membrane regulates exchange of nutrients, oxygen, inorganic ions, waste products, and water. The cellular membrane’s molecular organization controls permeability.
*I can't see the illustration
1. Snake would definitely kill or eat the rat.
2. The snake obviously.
3. The rat.
4. If the community of snakes increases, family of rats will extinct.
5. If the rats decrease in number, snakes would likely look for another prey.
6. Ecosystem would be unbalanced.
Okay. What do you need help on?
Pneumonia is a leading cause of death.