<em>paper is better</em> because its made of natural materials and the earth can absorb and decompose it.<em><u> Plastic is worse</u></em> because can get caught around animals necks and can be eaten which will cause stomach issues and later death.
The substances that protect against oxidative stress and the resultant tissue damage at the cellular level is, option B. Antioxidants. Oxidation can cause imbalance in the body. Antioxidants are used to counteract the damage produced by free radicals. Good natural sources of antioxidants include fruits and vegetables.
A population that has been isolated, especially a smaller one, could have a high level of homozygosity and therefore not a lot of genetic variation. Gene flow between such populations can increase the level of heterozygosity, and therefore up genetic variation.
