Answer: Plankton
Explanation:
Plankto ( drufter or wanderer ) is carried by tides and currents
Answer:
A tornado.
Explanation:
A tornado is a vertical column of air that is in contact with the ground and the sky. The air in a tornado rotates at high speeds creating a vortex with an empty core. This massive air column moves at high speeds, usually at 180 Km/h, taking everything that is on its way in a short time of about fifteen minutes.
Answer:
Biofuels have been around longer than cars have, but cheap gasoline and diesel have long kept them on the fringe. Spikes in oil prices, and now global efforts to stave off the worst effects of climate change, have lent new urgency to the search for clean, renewable fuels.
Our road travel, flights, and shipping account for nearly a quarter of the world's greenhouse gas emissions, and transportation today remains heavily dependent on fossil fuels. The idea behind biofuel is to replace traditional fuels with those made from plant material or other feedstocks that are renewable.
But the concept of using farmland to produce fuel instead of food comes with its own challenges, and solutions that rely on waste or other feedstocks haven't yet been able to compete on price and scale with conventional fuels. Global biofuel output needs to triple by 2030 in order to meet the International Energy Agency's targets for sustainable growth.
The Hidden Costs of Turning Food Into Fuel
1:47
THE HIDDEN COSTS OF TURNING FOOD INTO FUEL
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Explanation:
The walls of veins are thinner than arteries The blood pressure in veins is less than that in arteries.
