Answer:
Scientists have discovered what they say could be fossils of some of the earliest living organisms on Earth. They are represented by tiny filaments, knobs and tubes in Canadian rocks dated to be up to 4.28 billion years old.
Explanation:
Why Earth's inner core<span> has speed trap for </span>seismic waves<span>. </span>Earth<span> has multiple layers: the crust, the mantle, the liquid </span>outer core<span> and the </span>solid inner core<span>. Something is not quite right inside the </span>Earth's core<span>. When </span>seismic waves<span> from earthquakes ripple through its </span>solid<span> center, they hit a speed bump.</span>
Carolus Linnaeus also known as Carl von Linné
Answer:
Climate change is partly the result of an increased concentration of greenhouse gases, especially carbon dioxide
Explanation:
Increased concentration of carbon dioxide, leads to change in temperature because it traps the heat in the Earth's atmosphere. For greenhouse, carbon dioxide is the main gas. The other green house gases are water vapor, carbon dioxide, methane, nitrous oxide and ozone. Absence of the greenhouse leads to the average temperature of about -18 degree Celsius. But when these gases are present the average temperature is about 15 degree Celsius.
