C
in the first paragraph a fact is challenged
and the second one provides an example
You're either talking about Community which means grouping of different organs or population which is the grouping of the same organ
Depending on if your speaking of a human or animal. The kind of animal matters as well. Hind limbs tend to be stronger like with frogs and rabbits because they use them to jump and kick. With animals like squirrels, there forelimbs are used for picking up food. Hind limbs are also longer on many animals.
Answer:
A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions. Shared electrons located in the space between the two nuclei are called bonding electrons. The bonded pair is the “glue” that holds the atoms together in molecular units.
Answer: 2,400 kilometers.
Explanation: If an airplane flies at a constant speed of 600 km/h, then it travels 600km in one hour. Therefore, in four hours (600km*4), it will travel 2,400.