On average, each American produces 4 pounds of trash each day (1,460 pounds of trash each year). To contain this trash, landfills are constructed. In what way do landfills primarily endanger ecosystems? A.
They could contaminate surface and ground water sources.
B.
They inhibit the recycling of materials, such as aluminum or paper.
C.
They could decrease the production of acid rain.
D.
They encourage the rapid spread of infectious diseases.

What was the land like over 500 million years ago? what was under the sea?

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.