Humans consume resources and produce waste. As the human population grows, global consumption of resources and waste production increases. The waste generated often collects in dumping grounds called landfills. How does increased production of waste by humans affect Earth’s ecosystems?

A. Waste generation reduces the amount of soil erosion on land.
B. Waste generation increases the amount of land available to plants and animals.
C. Waste generation increases the amount of soil cover on land.
D. Waste generation reduces the amount of land available to animals and plants.

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.