Select the correct answer.
which statement best defines why sound waves are mechanical waves?
oa. they require a medium in which to travel.
ob. they can travel through vacuum.
oc. they can travel only through solids.
od. they can travel only through gases.

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

Talking listening and reacting non verbally are all part of communicating