Brainlies 1. which statement is true about elements? they are finite in number. they are infinite in number. they combine to form atoms. they combine to form electrons. 2. scientists have developed a new drug known to cure a previously incurable disease. what best explains if the new drug is a compound or not? it is a compound because it will be able to cure a disease. it is not a compound because it was developed by scientists. it is a compound because compounds make all types of matter. it is not a compound because compounds make up only living things.

80 pts the type of cloud shown here may produce heavy rainfall. this type of cloud most likely occurs in an area of the sub-saharan that is a) often dry. b) often wet. c) very windy. d) usually cool.

The production of cells during mitosis into specialized function is recombination or differentiation

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.