Following are the choices:
a. nonrenewable energy sources b. renewable energy sources
c. carbon sequestration d. recycled plastics
The correct answer is:
b. renewable energy sources
Explanation:
Renewable energy is energy that is obtained from renewable resources, which are naturally provided on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy compares to the provision of energy via renewable sources which are simply replaced fast enough as being used.
Answer:
Flowers have male parts called stamens that produce a sticky powder called pollen. When pollen from a plant's stamen is transferred to a different plant's stigma, it is called cross-pollination. Cross-pollination produces stronger plants. The plants must be of the same species.
Explanation:
Answer:
So if the size of the pore is small then the rate of the diffusion will be very slow as the molecules will move from high concentration to low concentration in very slow rate.
Explanation:
I hope it helps you
Synergids stimulates the pollen tube to grow.
