Answer:
Most liquids become monotonically denser when cooled from room temperature, but liquid water reaches its maximum density at approximately 4°C, below which it expands to become less dense as it is cooled further. To explain this density anomaly, several ideas have been proposed.
Explanation:
Answer:
I believe I have had this question this before. The correct answer should be rr, BB.
Vain are the transportation system through the body
Carbon dioxide and water are components of air help to trap infrared energy.
Explanation:
The atmosphere of the planet acts in a {very} very similar thanks to a greenhouse. daylight penetrates the clear air and causes the bottom to heat.
The atmosphere then acts as a blanket, keeping the heat of the planet from escaping back to the area. This result is thanks to bound gases within the atmosphere that are superb at gripping and re-radiating the warmth energy before it's lost to the area.
These gases, referred to as "greenhouse gases", embrace greenhouse emission, water vapor, and paraffin.
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.
