Geologists have recently determined that the minerals goethite and hematite exist in abundance on Mars, sure signs of the presence of water (see Figure 1 for a picture). None of those geologists have been to Mars, of course, but the unmanned rovers Spirit and Opportunity have. These rovers are equipped with three mass spectrometers, each of which is capable of determining the chemical composition of a solid with a high degree of accuracy. With such a precise chemical analysis in hand, geologists on Earth had no problem identifying the minerals.
A mineral is defined in part by a specific chemical composition. In theory, therefore, it is always easy to identify a mineral, if you can determine the chemical composition with a mass spectrometer like the Mars rovers. In reality, however, even if you are looking at rocks on Earth, determining the exact chemical composition of a substance involves significant time preparing the sample and sophisticated laboratory equipment (and often significant money). Luckily, it is usually unnecessary to go to such lengths, because there are much easier ways that require little more than a magnifying lens and a penknife.
Prevailing winds- winds that come from a direction predominant during that specific time and place
doldrums- state of depression or inactivity
current- body of air that moves in a direct direction, especially through a surrounding mass of air that accumulates less movement
precipitation- snow, rain, hail, or sleet that falls to the ground
windward- direction of upwind from a specific point
leeward- direction downward from a specific point
rain shadow- a place that has little rainfall because it’s blocked off from prevailing rainfall winds by a range of large hills
Answer:
True
I hope this helps you <333
Answer: Sustainability is important for a very simple, very straightforward reason: we cannot maintain our quality of life as human beings, the diversity of life on Earth, or Earth’s ecosystems unless we embrace it. There are indications from all quarters and from the smallest to the largest scale that sustainability is something we must address.
Answer:
Layer 6
Explanation:
layer 6 because amored fish are really old
