Kendra watch is a television commercial for a new alternative medicine she is interested in the medicine but she is unsure if it really works which of the following will give reliable evidence of the medicines properties

the answer is D the reasoning of this is because you need to test it first and make sure its right it dont matter if you have expensive items to do your reasearch

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs