Most of the regulated medical waste in the united states is incinerated. these incinerators are a health hazard because they release pollutants like lead into the air. how could technology be best used to solve this problem? a.) do not dispose of waste that contains pollutants like lead. b.) find a way to incinerate waste without allowing lead to escape. c.) only incinerate waste in areas with low levels of pollution. d.) prevent people from getting unneeded medical procedures.

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.