3, What societal, ecological, or technical constraints should resource managers consider
before proposing solutions?
4. Describe the design solution engineers and scientists developed to prevent
contamination of Cleveland drinking water. Why did their solution need to address bo
sub-problems equally?
5. Propose two additional solutions to address the ecological phenomena causing the
water contamination in Lake Erie.

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle