Answer: B
Explanation:
Seasons on Earth occur due to tilt of its axis. Earth's axis is tilted 23.5° from the vertical. As the Earth revolves around Sun, the hemisphere is points towards Sun experiences summer season and the hemisphere points away from the Sun experiences winter.
It is given that U.S. is experiencing winters. U.S. lies in the northern hemisphere. Thus, the image which depicts winters in U.S. is image B as the sun rays are falling directly in southern hemisphere and northern hemisphere is pointing away from the Sun.
Answer:
The correct answer will be option-B.
Explanation:
<em>Homo neanderthelensis</em> or Neanderthals are the close relatives of the <em>Homo sapiens</em> or modern humans which became extinct around 10,000 years ago.
The Neanderthals and sapiens are the two related species of the same genus Homo but they showed distinct features like Neanderthals were muscular and shorter in height compared to the <em>Homo sapiens</em>. Recent fossils indicated that Neanderthals and<em> Homo sapiens</em> interbreed in some parts of the world as they were closely related to each other.
Thus, Option-B is the correct answer.
I believe that would be called synergists
Answer:
42
Explanation:
Atoms have a neutral charge overall, which means they have an equal numbers of positively-charged protons and negatively-charged electrons. Here, an atom of arsenic with 33 electrons must also have 33 protons.
The mass of any atom is contained in its <em>nucleus</em>, a part made up of protons and neutrons - particles with no charge. Both protons and neutrons are exactly 1 atomic mass unit each, so to find the atomic mass of an atom, we can use the formula
(# of protons) + (# of neutrons) = atomic mass
or equivalently:
atomic mass - (# of protons) = (# of neutrons).
For arsenic, we have an atomic mass of 75 amu and 33 protons, so using our formula:
# of neutron = 75 - 33 = 42 neutrons
Answer:
35%
Explanation:
Since we know that 35% of the bases in the section of DNA are adenine, we can conclude that 35% of the bases are thymine.
