Out of the choices given, the step that caused an aerobic atmosphere during the history of Earth was the origin of photosynthetic prokaryotes. The correct answer will be D.
I am not sure but I believe it’s A! Please tell me if I’m wrong!
Hey you yes you, I have the answer you need!
The brain sends messages via the spinal cord to peripheral nerves throughout the body that serve to control the muscles and internal organs. The somatic nervous system is made up of neurons connecting the CNS with the parts of the body that interact with the outside world.
Hope this helps!!
Answer No 1:
The terrestrial biomes depend on the type of land on which the biome will be formed.
Two of the examples of terrestrial biomes are:
- Desert biome: A desert biome will be formed in areas where there is little to no water. The biotic components of such a biome are adapted to live in harsh conditions. The plants are adapted to use little water and animals can survive with little water and can also store water in their bodies.
- Tundra: Plants and animals in this biome are adapted to survive in extreme cold temperatures. Animals, like the polar bears, have fur on their bodies which keep the heat insulated in them.
Answer No 2:
Both the biotic and abiotic components of a biome are dependent on each other.
Some of the ways by which abiotic factors might be affecting the biotic factors of an aquatic ecosystem are:
Temperature: More number of organisms will be able to survive in the rivers when the temperatures are moderate. During extreme conditions, lesser number of aquatic species will be able to survive.
Sunlight: There will be more aquatic plants in the area of the ocean which receives more sunlight. These plants will be a source of food for many aquatic animals. Hence, there will be more diversity in areas of the river which receive more sunlight.
