<span>Population sizes decrease at higher trophic levels.
</span>
Answer:
B
Explanation:
because he's the only one with good internet connection
Answer:
Wegner proposed the theory of Continental Drift (Pangea). Continental Drift is a theory that at one time, all of the continents were stuck together in this one giant land mass. They drifted apart slowly and formed into our modern day world. Hope this helps!
I believe that during the second and third trimesters of pregnancy, the woman's energy needs increases by 350 to 450 kilocalories per day. Energy needs during pregnancy are no higher than the Estimated requirement for non pregnant women until the second trimester, there after energy need per day is 340 kcal and 452 kcal in the second and third trimesters, respectively.
<h2>The answer is option (b)</h2>
It is positively charged and includes most of the atom's mass.
Atoms are the basic units of matter and they are composed of a nucleus
and one or more electrons bound to the nucleus.The atomic nucleus is the small,
dense region at the center of an atom which consists of one or more protons and a similar number of neutrons.The protons are positively electric charged, the electrons have a negative electric charge, and the neutrons have no electric charge. Protons and neutrons are heavier than electrons and reside in the nucleus and they are bound together to form a nucleus by the nuclear force.
More than 99.94% of an atom's mass is in the nucleus.
