Answer:
There were 1.2 billion persons in the year 1850
Explanation:
Answer:
via hydrogen bonds; there are two between adenine and thymine and three between cytosine and guanine
Answer:
D. hot, but much cooler than at a hydrothermal vent
Explanation:
A cold seep is an area in the ocean floor where hydrogen sulfide, methane and other hydrocarbon rich fluids seep through thus forming a brine pool.
A cold seep is also called a cold vent and its temperature is not necessary lower than that of the surrounding water, but it is lower than that of a hydrothermal vent which is about 60 °C.
Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a <span>generator to create electricity.</span>
Answer:
true
Explanation:
Green plants have the ability to make their own food. They do this with a process called photosynthesis, which uses chlorophyll. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide and water into glucose.
