How long did the Ordovician Period last?​

Brainliest goes to first explain why or why not in approximately 100 words. should scientists who identify genes and create new genetic engineering techniques have the right to patent their methods for their own profit?

In a cladogram' when does a group of organisms branch off

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit