Answer:
B. Their predators have been killed by the Cretaceous-Paleogene extinction
Explanation:
The mammals and the avian dinosaurs were small creatures, living in the shadows of the dinosaurs which dominated the world, but also were stopping the further increase in size and development of these animals. At the end of the Cretaceous though, an asteroid struck the Earth. The impact was so hard and devastating that it managed to destroy the dinosaurs and wipe them out of the face of the Earth, with the only dinosaurs remaining being the small avian species. Since lots of niches opened up and where free for taking in the ecosystem, the mammals and the avian dinosaurs quickly started to evolve, diversify, and become much larger. The mammals seem to won the race for dominance as they have become the most dominant species on the planet.
Answer:
Terrestrial planets
Explanation:
There are two types of planets:
- The inner planets or terrestrial planets
- The outer planets or Jovian planets.
The outer planets are gas giants and are made of huge mounds of gases. These planets are Jupiter, Neptune, Uranus and Saturn. They all have satellites revolving round them.
The terrestrial planets are small rock masses. They are mercury, venus, earth and mars. Earth has one satellites and Mars has two satellites.
The asteroid belt seperates the Jovian and terrestrial planets. Beyond the Jovian planets lies the Kuiper Belt Objects or KBOs.
Answer:
B
Explanation:
the San Bushmen were are the oldest inhabitants in Africa and the term San is referred to group of hunter- gatherers
Answer: It is used to show the force between two objects caused by gravity.
Explanation: The gravitational constant appears in Isaac Newton's universal law of gravitation.
{\displaystyle G}{\displaystyle G} is about 6.67430×10−11 N⋅m2/kg2,[1] and is denoted by letter G
