Active transport is a cellular transport mechanism. It’s the movement of molecules that are assisted by enzymes along the way to a higher concentration.
Answer:
Chromatin
Explanation:
Chromatin means<em> "chroma"</em> in Greek. It can be found in <em>eukaryotic cells</em> with <u>non-dividing nucleus</u>. They make up the<u> chromosomes of cells</u> during <em>cell division. </em>The fibers of chromatin consists of DNA<em> (deoxyribonucleic acid</em>) and proteins<em> (histones and non-histones)</em>.
It is said that chromatins got their name owing to their<em> bright colors when mixed with dye</em>. This was found by scientists who inspected it under a microscope.
Amphibia is the class of vertebrates which is considered to be the first to develop lungs. This allowed amphibians to live successfully on land as terrestrial organisms. Ichthyostega was the first primitive amphibians with nostrils and lungs. Amphibians adopted themselves to live on land with developed lungs.
Answer:
5 Facts
Explanation:
1. When it comes to chemical weathering, it’s all about chemistry. By looking at the term “chemical weathering,” you can see that a chemical reaction causes something to break down or “weather.” That “something” is rocks and minerals.
2. In chemical weathering, rocks and minerals are reacting to acids, oxygen, carbon and water. That’s why no two rocks ever look exactly the same. It’s also the reason that we have those awesome looking caves and unique rock formations all over the world.
3. While chemical weathering creates nifty formations, the way it breaks down rocks also causes fractures in ancient structures like the Great Sphinx of Egypt. It also causes the surface to break down on gravestones.
4. Chemical weathering types can work separately, but they often work together to create landforms and break down minerals.
5. Acid rain caused by pollution such as factory and car exhaust is another agent of chemical weathering.