Electricity is the answer
Evolution is caused by genetic mutations that become favorable for survival.
For example if a bird has a mutation that gives it a longer beak and it lives in an environment in which a longer beak lets the bird catch more food- the longer beak becomes a favorable trait.
Now the bird is able to survive “better” thus it lives longer(due to its ability to catch more food). Because of this it reproduces more and passes the trait on to its offspring.
Overtime this mutation takes over the population of birds in the area.
Provide sperm to fertilize the eggs in the female reproductive system.
Answer:
The good ozone layer can be described as the stratosphere part of the atmosphere which protects the Earth from harmful ultraviolet radiations from the Sun. The good ozone layer is however in a serious depleting condition due to human activities.
On the other hand, bad ozone layer is the part of the troposphere which is polluted. Emissions of toxic gases from human activities is the leading cause of this kind of pollution.
Answer: Mosses retain soil humidity and prevents its degradation, besides are habitat for little invertebrates.
Explanation: Mosses are non-vascular plants (they don't have conductive vessels as xylem and phloem) that live places as tree trunks, rocks, walls and soils. This habitats must be humids because mosses need water for nutrient transport, because they don't have cuticle (prevents water lost) and for fertilization. Mosses are important for the ecosistems where they live because retain water in the soils thus prevent erosion and harbor invertebrates as Tardigrades (water bears).
