Subject
Earth & Space Science study guides
Planets, plate tectonics, weather, and rocks — explained with diagrams and cycles.
4 explained questions, each with the answer, a worked explanation, and something interactive to help it stick.
- Which statement is true about conservation versus preservation?The true statement is that conservation promotes the sustainable, regulated USE of natural resources (an anthropocentric, human-centered view), while preservation seeks to protect nature FROM human use and interference entirely (an ecocentric, nature-centered view).Read the guide
- Which Resource Could Be Considered Both Renewable and Nonrenewable?Timber (trees). Wood is renewable when forests are replanted and harvested sustainably, but it becomes effectively nonrenewable if cut faster than it can regrow, as in deforestation. Management determines which category it falls into.Read the guide
- Which Resource Is Renewable: Gold, Coal, Lumber, or Minerals?Lumber is the renewable resource. Trees can be replanted and regrown within a human lifetime, so a managed forest replenishes itself. Gold, coal, and minerals form over millions of years and cannot be regenerated on a human timescale, making them nonrenewable.Read the guide
- Is it true that blackwater is cheaper and easier to process than greywater?False. The statement is backwards. Blackwater (toilet and kitchen wastewater) carries pathogens, fecal solids, and heavy organic loads that demand intensive, costly treatment. Greywater from sinks, showers, and laundry is far less contaminated, so it is cheaper and easier to process.Read the guide