Water is polar. Lipids are non-polar.
There was no life on Earth for the first billion years because the atmosphere was not suitable for life. Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air.
The following tests can determine the mineral in a rock specimen:
1. How does the rock crumble or split under pressure?
2. What is the texture of the rock?
3. Observing it under a magnifying lens.
4. Determine the color of the rock
Test 1 and 3 determines if the rock is granular and the types of grains in the rock. Test 3 also determines if the rock has layers hence sedimentary rock.
Determining whether color of the rock is dark or light also helps identify the mineral and type of rock.
Explanation:
The difference between first and second consumer are,
- <em>The</em><em> </em><em>first</em><em> </em><em>consumer</em><em> </em><em>are</em><em> </em><em>autot</em><em>r</em><em>op</em><em>h</em><em>ic</em><em> </em><em>in</em><em> </em><em>nature</em><em> </em><em>but</em><em> </em><em>second</em><em> </em><em>consumers</em><em> </em><em>are</em><em> </em><em>heterotrophic</em><em> </em><em>in</em><em> </em><em>nature</em><em>.</em>
- <em>The</em><em> </em><em>first</em><em> </em><em>consumer </em><em>are</em><em> </em><em>mostly</em><em> </em><em>plants</em><em> </em><em>and</em><em> </em><em>second</em><em> </em><em>consumer</em><em>s</em><em> </em><em>are</em><em> </em><em>mostly</em><em> </em><em>animals</em><em>.</em>
- <em>The</em><em> </em><em>first</em><em> </em><em>consumer are</em><em> </em><em>called</em><em> </em><em>producers</em><em> </em><em>and</em><em> </em><em>second</em><em> </em><em>consumer are</em><em> </em><em>called</em><em> </em><em>herbivores</em><em>. </em>
<em>hope</em><em> </em><em>it helps</em><em>.</em><em>.</em>