How did plants and algae acquire their ability to photosynthesize?
What will be an ideal response?
At some point during their evolutionary history, a eukaryote enveloped an oxygenic cyanobacterium without killing the cyanobacterium. The result was a eukaryotic cell structure with a photosynthesizing organelle called a chloroplast. The process is termed "endosymbiosis." The evidence for this endosybiotic event comes from the close genetic relationship between chloroplasts and cyanobacteria.
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The wet tropics are limited to areas ________
A) where the humidity averages more than 70% B) where the trade winds bring moisture C) where the temperature is always above 35°C D) below 1000 meters of elevation E) that have mountainous regions of forest
Cities rely on their ________ for food and provide them goods and services
A) populations B) neighboring cities C) hinterlands D) farmers
Which category most accurately describes waste such as food wastes, cardboard, cans, bottles, yard wastes, furniture, plastics, metal, glass, and e-waste?
a. e-waste b. municipal waste c. solid waste d. industrial waste e. municipal solid waste
El Nino events are caused by a dramatic increase in barometric pressure over large portions of the eastern Pacific.
Indicate whether the statement is true or false.