Which situation results in a characteristic that is
inheritable?
(1) a limb is lost when two marine organisms fight.
(2) a puppy learns to beg for food by watching
an older dog perform tricks.
(3) a gene is inserted into a bacterium, allowing
the organism to produce insulin.
(4) a random mutation causes the immediate
death of a microbe.

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d. the size of the geographic area inhabited by a population can cause speciation.

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels