the disks of spiral galaxies appear blue because:
spiral galaxies are still undergoing star formation
Hope this helps:)
Answer:
A, D Is your answer
Explanation
Researching bones, animals, and DNA can tell you a lot about the
colonial history of a region. Even clothing, vehicle parts, and
plant life can tell how people lived in colonial times.
Answer:
A
Explanation:
Olive trees are found largely along the coast of Mediterranean climates where the have the ideal precipitation and temperature conditions to thrive. In the mountainous areas further inland, the trees would have to adapt to more extreme temperatures and generally dryer conditions.
The Arabian peninsula does not feature a Mediterranean climate, but instead a desert climate that does not permit the growth of trees outside oases.
Answer: Polaris
Options:
the moon
the sun
Polaris
Sirius, the dog star
Explanation:
Polaris, also known as the North Star is a star in the Ursa Minor. It is the brightest in this Constellation and when observed over a long period of time, it seems to stays in the same position.
The angle at which Polaris is observed will be similar to the latitude of the observer’s location. For instance if it is seen to be 35 degrees above the horizon, the observer’s location is at a latitude of roughly 35 degrees.
This is due to the closeness of the Polaris to the North Celestial Pole, the axis of the stars in the Northern Sky. As the earth rotates, this creates the appearance that Polaris is stationary.
Natural gas is a mixture of gaseous hydrocarbons located under the surface of the earth, often near petroleum deposits; used as a fuel. Petroleum-liquid is a mixture of complex hydrocarbon compounds, used widely as a fuel source. Oil and natural gas are formed<span> from the remains of plants and animals.
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