Two Properties Are <span>Gravity and inertia. Inertia gave the earth its angular momentum while gravity keeps the earth from drifting off.
Thus Giving Orbit Around The Sun!</span><span />
The correct answer is climate
Observational research is required to be conducted if someone wants to see whether, when seated next to their closest friends in the cafeteria, students were more likely to spill ketchup on themselves or not.
Moreo about Observational research:
In observational research, people and phenomena are observed in their most natural environments. Instead of using organised environments like study labs or focus groups, this allows researchers to observe how their participants make decisions and respond to circumstances in their everyday lives.
The study of non-experimental circumstances in which behaviour is observed and noted is referred to as observational research. The phrase "what really is going on or what's he doing" could also be used. The variables are neither controlled nor manipulated, hence the study is categorised as non-experimental.
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The correct answer is The phylogeny of the birds shows a single common ancestor for the group.
Adaptive Radiation is the evolutionary process that results in the emergence of different species from the same common ancestor.
The process begins with the colonization of a certain group in a new environment, being, therefore, submitted to new environmental conditions that will select those most able to survive in that particular environment.
