Answer and Explanation:
During the whole biota history, there occurred extinctions due to different reasons.
During the Cretaceous, which took place between 145-65 million years ago, there occurred a massive extinction that eliminated most of the species on the Earth. Many of the characteristic groups of this period were affected. Dinosaurs, Plesiosaurs, Ammonites, Tricodonts, Cycas, Gynkgos, Conifers, the recent angiosperms, birds, and mammals.
The extinction was caused by the volcanic eruptions, and the unusual fall of many different asteroids, which caused important changes on the Earth´s surface. The consequent climatic change was what ended affecting all the species directly. The extinction was gradual, although it occurred in a short geological lapse of time.
Answer: Geosphere
Explanation: The geosphere includes the rocks and minerals on Earth from the molten rock and heavy metals in the deep interior of the planet to the sand on beaches and peaks of mountains. For example Sedimentary rocks, Igneous rocks, and Metamorphic rocks.
The correct answer is option B
The proper enzymes are synthesized from the information of the gene by the process of protein synthesis. All the enzymes are protein and protein are synthesized by the process of protein synthesis. These are protein in nature so they are produced in ribosomes. The gene codes for a specific protein and produces enzymes(protein).
