Sun is the source of energy for life on earth.
Answer Sun -d)
The answer is C, because if something contagious we’re to threaten the population of the species then not having any variant means they’re all the same and it would kill them all and cause them to go extinct
The water will flow out of the cell and into the area with more solutes.
These first trees had a huge importance for the other plants and for the animals, and this was because:
- they managed to change the structure of the atmosphere by consuming, using, and storing carbon dioxide, and releasing oxygen, which made the atmosphere much more suitable for life.
- they managed to influence the climate, by making it more moist, and also making the ground bellow them cooler.
- they were producing large amounts of biomass, which made the soil types much richer in nutrients, which in turn enabled more and more plants to grow.
- they were a food source of the animals.
