Producers eat other producers. Consumers eat only other consumers. Producers make their own food from sunlight.
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Answer: Option D.
Generating electricity.
Explanation:
Natural resources refers to substances that are exist in nature which can be exploited and use for human benefits.
Natural resource like water, natural gas, uranium and coal are used to generate electricity.
Coal and natural gas are used to generate electricity by combustion.
Hydropower plants use energy of falling water to generate electricity through the moving turbine that rotate which convert the kinetic energy of falling water to electricity.
Answer: green algae
Explanation:
Alga is classified as plants as it contains chlorophyll. But, it lacks true stem, roots etc. It is a large group of aquatic plants. Algae could be unicellular, multi cellular or colonial.
A unicellular contains single cell where as multi-cellular consists of of many cells. Kelp, Plankton and Brown algae are multi-cellular where as green algae can be either unicellular or multi-cellular.
Answer:
2. it disappeared because the heated up acid ate it away
Answer: B. strong natural selection.
Explanation:
Speciation is the process by which new species form from the existing parent species. It occurs when the population of the species become reproductively isolated. In sympatric speciation the organisms living in the same geographical area becomes reproductively isolated due to changes in the behavior, morphology and genetic make up.
Among the option given, strong natural selection is the correct option. This is because of the fact that natural selection brings changes in the living being in terms of adaptation. The organism having better phenotypic trait will survive and reproduce. The beneficial traits will pass on to next generation may lead to evolution of new species. The members of the new species may not be able to breed with parent species.