Please help me solve these multi questions, as soon as possible I got stuck on it. Thanks so much for your help!

Question 21 1 pts New, derived traits of human evolution over the past five million years include all of the following. except: O encephalization O lack of body hair O reduced sexual dimorphism O elongation of the arms relative to the legs Question 22 1 pts The study of sequential layering of deposits on archaeological sites is known as: O dendrochronology O ecology O remote sensing O stratigraphy Question 23 1 pts The natural materials recovered from archaeological sites, including plant and animal remains, which provide information about a site's past environment, are known as: O features O culture O artifacts O ecofacts Question 24 1 pts What is the name of the bony ridge extending along the midline of the cranium in "robust hominins," such as Paranthropus, for insertion of their large chewing muscles? O nuchal crest O sagittal crest O occipital bun O zygomatic arch Question 25 1 pts The study of how bones and other materials came to be buried in the earth, preserved, and fossilized is known as: O primatology O experimental archaeology O ethnoarchaeology Otaphonomy Question 26 1 pts Modern societies, as well as ancient peoples and hominins, "who make their living by hunting, fishing, and gathering food" are known as: O agriculturalists Ohunter-gatherers O pastoralists O horticulturalists Question 27 1 pts Given the type of stone tools found at early Homo sites, their subsistence pattern would appear to have routinely involved O fishing Oscavenging O hunting O farming Question 28 1 pts This term describes a tool minimally made from two or more materials, such as a handle and stone blade, which were bound together with an organic glue or sinew. O prepared core method O sertation O composite tool Osoft-hammer precussion Question 29 1 pts Which of the following anatomical traits are associated with Neanderthals? O robust bones and joints large cranial capacity O all of the above O barrel/conical-shaped chest Question 30 1 pts Approximately what percentage of the nuclear genome of modem-day Melanesians is estimated to be derived from the Homo population represented by the skeletal remains recovered from the Denisova Cave in southern Siberia dating between 50,000 and 30,000 years ago? O 10.9+/-05% O none of the above O 7.0+/-05% 0 20.0+/-05%