A
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Answer: some viruses are contagious which makes them more dangerous than viruses that are not contagious
Explanation:
C. They can slow it down, speed it up, or change its direction.
Explanation:
Unbalanced net forces on a bike will affect its motion. It can cause the bike to slow down, speed up or change its direction.
According to newtons first law of motion:
<em>An object or body will continue in its state of rest or of uniform motion unless it is acted upon by an external force. </em>
<em> </em>This external force is the unbalanced force on the bike.
- The direction of a motion can change if an unbalanced force acts on the bike.
- If the unbalanced force is very high, the bike will speed up
- if it is low, the motion of the bike can reduce.
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Many paleoanthropological studies have proved the migration of Homo sapiens from Africa to North America with the Out-of-Africa theory.
Explanation:
Many paleoanthropological studies have proved that Homo sapiens migrated out of Africa and arrived in the North America.
The Out-of-Africa theory or the trellis theory is a theory which describes the migration of Homo sapiens from Africa to other parts of the world.
The Homo sapiens developed structures like skull, postcranial skeleton, along with cognitive abilities became unique among other Hominids. The origin of our ancestors, H. sapiens, H. eructus were profoundly from Africa from the Hominidae zoological family.
During the pre-historic era, these hominids and their various species migrated to parts of Eurasia, like the Neanderthals and also to the Far East.
Finally, with all the other evolutionary forms slowly receding with the completion of migration processes, the Homo sapiens were formed with a standing man. Later the H. sapiens developed physically and cognitively and became skilled to do many activities. Then they migrated towards North America and then to South America.
Bee pollination is an example of regulating ecosystem services.
- Ecosystem services provide beneficiaries for the living of human beings.
- The most significant services including providing provisionals( food), regulating the essential process for the ecological balance.
- Bee pollination in natural and agricultural ecosystem supports the food production and regulating the genetic flows in plant species.
Learn more about ecosystem services on brainly.com/question/8513228