A double helix is <span>a pair of parallel helices intertwined about a common axis, especially that in the structure of the DNA molecule. or in other words a double spiral.</span>
Dinosaur fossils had been known for centuries as "dragon bones" or the remains of giants, but it wasn't until Dean William Buckland of Oxford, England described the carnivorous "lizard" Megalosaurus<span> (in 1824) that they were formally studied as an extinct group of giant reptiles</span>
Answer:
Earth is between the sun and the moon
Explanation:
A lunar eclipse occurs when the Earth is between the Sun and the moon , blocking the sunlight from reaching the moon.
Energy
efficiency describes the ability to obtain a given result or amount of output
while using less energy input. energy conservation describes the practice of
reducing wasteful or unnecessary energy use.
Energy
efficiency represents the ratio between the useful output and input of an
energy.
<span>
Energy
conservation represents a process which is used to reduce the quantity of
energy that is used.</span>
