How humans activeity affects earth natural resouses

Because of the severe impact that we impose on the land, air, and water, conservation has
become increasingly important.
 Conservation is using natural resources wisely and not contributing to pollution of the land, air or water. Human activities can benefit the environment and help preserve resources.
 Conservation can include small-scale clean-up projects along roadways or building fences to prevent dune erosion to large-scale beach renourishment. Planting trees is another way to support conservation as trees are too often removed without being replanted.
 The phrase “Reduce, Reuse, and Recycle” has been a catch phrase of the late 20th and early 21st centuries.

Six amino acids have side chains that are polar but not charged. these are serine (ser), threonine (thr), cysteine (cys), asparagine (asn), glutamine (gln), and tyrosine (tyr). these amino acids are usually found at the surface of proteins, as discussed in the proteins 2 module.