Answer:
Its number 4 , After billions of years, cyanobacteria turns into iron; the iron beds are remnants from cyanobacteria. its 7th grade science.
Explanation:
The creative use of science to solve problems.
False, the angle is consistently the same, yet the placement of the Earth at this angle directed at the sun is what allows the Earth to have seasons (Spring, Summer, ...) So the answer is false.
Ribosome are where RNA is translated into protein. This process is called protein synthesis. Protein synthesis is very important to cells, therefore large numbers of ribosomes are found in cells. Ribosomes float freely in the cytoplasm, and are also bound to the endoplasmic reticulum (ER).