When did the supercontinent Pangaea exist?
A) during the Pleistocene B) during the Paleozoic
C) during the Cenozoic D) during the Holocene
B
Environmental & Atmospheric Sciences
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The most abundant gas in the planetary atmospheres in nitrogen
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Approximately what percentage of human DNA codes for proteins?
A) 3% B) 50% C) 75% D) 97%
Environmental & Atmospheric Sciences
What are four ways that poverty affects mortality and morbidity?
What will be an ideal response?
Environmental & Atmospheric Sciences
The place where an organism lives is its ________
A) ecosystem B) biome C) niche D) community E) habitat
Environmental & Atmospheric Sciences