Answer:
The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapour, ammonia and methane. As the Earth cooled down, most of the water vapour condensed and formed the oceans.
Explanation:
Answer:
D
Explanation:
The have carpels that enclose, developing a seed that may turn into a fruit
Answer:
arrow (which creates the resultant vector)
Explanation:
When you use the graphing technique when adding vectors, you can use the head to tail method to draw the vectors. And from the starting point or the tail of the first vector you drew, you will draw an arrow touching heads with the head of the last vector drawn.
With that, you can use a ruler to measure the resultant vector's magnitude, and use a protractor to measure it's direction.
Below is an example:
Let:
V1 = Vector 1
V2 = Vector 2
R - resultant vector.
Answer:
Bipedal posture allowed arms to be free to develop and use tools.
Explanation:
<span>The biological term for such organisms is "deuterostomes". Those who's first opening is the mouth are called protostomes.
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