Which of the following protects skin against damaging ultraviolet solar radiation?
a. Aloe
b. Coconut oil
c. Melanin
d. Vitamin D
e. Lactase
c
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Many thousands of untouchables have converted to __________ as a protest against their treatment under the caste system
a. Hinduism b. Islam c. Christianity d. Buddhism
Which of the following statements is true?
A. Biological communities that maintain diversity are less resilient in sustaining environmental challenges without disappearing. B. Biological communities that maintain diversity are resilient enough to sustain environmental challenges without disappearing. C. Biological communities that maintain diversity are resilient enough to sustain environmental challenges but still disappear. D. Biological communities that have less diversity are resilient enough to sustain environmental challenges without disappearing.
By 100,000 years ago in Africa __________
a. H. erectus was the most common hominin b. H. habilis could still be found is small pockets of ease Africa. c. H. sapiens was a well-established species d. Neandertal was making headway into the continent from the north.
The critical thing that created the demand for African slaves in the Americas was:
a. Mining. b. Growing sugar. c. Construction of roads. d. Missionary work. e. Fishing and whaling.