The heart’s electrical system is responsible for making and conducting signals that trigger the heart to beat. These signals cause the heart’s muscle to contract. With each contraction, blood is pumped throughout the body. This happens 24/7 without us having to monitor it all the time so that our heart does not stop.
Answer:
It's B
Explanation:
Law of independent assortment stated that individual heredity factors assort independently during gamete production. the evidence that Mendel find that supported his law of independent assortment is : different traits are passed on independently of each other
Answer:
UUAGUACCU
Explanation:
A ---> U
T ---> A
C ---> G
it's been a while since I did this stuff but I'm 99% sure it's correct
It is called hydrosphere
It is the total water in Earth.
Answer:
D. hotter rock rises and cooler rock sinks.
Explanation:
We know that as we move <u>towards Earth's center</u>, the <u>temperature rises</u>. This rise in temperature causes rocks to melt (magma). The high temperature and melting of rocks <u>decrease the density of material </u>which makes it <u>move upward</u>. By <u>moving upward</u>, the molten rock <u>starts turning solid</u> and becomes <u>denser again</u>. Here, it <u>sinks back due to gravity</u>. This upward and downward movement of rocks due to density and temperature makes a convection cell.
PS: The formation of convection cells in Earth's interior is also the reason for plate tectonics.
