In euphotic zone (真光层), which of the following is correct? A: The photosynthesis of phytoplankton is stronger than respiration B: The photosynthesis of phytoplankton is weaker than respiration C: The photosynthesis of phytoplankton is the same as respiration D: All the answers are incorrect

What is the main chracteristic of plants? A: Without chloroplasts B: Photosynthesis C: Without cell wall. D: Grows in soil only.

Ways to produce hydrogen fuel include producing it from nuclear power, biomass, algae, artificial photosynthesis, direct solar and coal gasification.

Photosynthesis is a major source of which of the following gases in Earth's atmosphere? A: CO2 B: H2O C: O2 D: H2 E: N2

Listen and choose by context clues. What does photosynthesis mean? A: energy-storing process B: energy-releasing process C: energy-consuming process D: energy-absorbing process