The nucleus contains the

genetic information
power for the cell
cell's organelles
cell's transportation capabilities

question 51 (multiple choice worth 1 points)

one advantage of cloning is

new organisms are often sickly and do not live long lives
through cloning, the diversity of genes would be lost in a species
scientists are able to study how organisms grow and reproduce
cloned animals are less resistant to new diseases

question 52 (multiple choice worth 1 points)

artificial selection is

intentional breeding for certain traits
a process that does not allow a species to reproduce
a natural process
when an organism passes on its traits because it is the strongest

question 53 (multiple choice worth 1 points)

which of the following is not associated with asexual reproduction?

budding
fission
spore formation
fertilization

What field of science did harry hess study?

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.

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided