Answer is 1/4 of the atoms
at 0 years it would be the full amount (X)
at 10 million years you have half: X/2
at 20 million years you have 1/4 because: (X/2)/2 will equal 1/4
Answer:
sugar(glucose)
oxygen
Explanation:
carbon dioxide + water --sunlight--> glucose + oxygen
“Climatic conditions help to shape various ecosystems and habitats around the globe. A particular climate can be a boon to one species and a devastation to another. As the climate changes, species and ecosystems respond by adapting, migrating, or reducing their population. Gradual shifts in the climate are easier to adapt to than abrupt swings, and this is certainly true for humans as well as other species. Studies of Earth's climatic history indicate that climates have changed in the past and resulted in dramatic shifts in ecosystems. The most recent geological period the Holocene (about last 10,000 years), however, has been unusually stable.”
For the first question, the answer would be the hydrosphere (D). For the second it would most likely be the average yearly weather patterns in a given area (C). For the last question, it would be the biosphere (D).
Answer:
Yes, with a condition.
Explanation:
Renewable energy sources and have always been available on the planet, but until recently, humans have not had the technology necessary to harness them. Since solar and wind energy are limitless, it clearly makes sense to invest the necessary amounts of money to build one-time infrastructure capable of powering all human activity without depleting natural resources.
The condition that is a prerequisite already being fulfilled is that technology be developed to make alternative energy solutions <em>economically viable and profitable </em>enough to be able to compete with traditional non-renewable sources.
