Answer:
Deuterium
Explanation:
Deuterium is an isotope of hydrogen with one proton and one neutron in its nucleus.
Thus it has a mass number 2.
Answer:
The continents were once connected, and marsupials were able to migrate over the land.
Explanation:
There are a lot of evidences present which indicates that the continent were once connected and present as a super continent but with the passage of time, this super continent splits into two parts and go far from each other. Marsupials also present on two different continents such as America and Australia. These two continents first attached to one another and these Marsupials spreads on these lands. With the passage of time, they splits and go far from one another.
the complementary DNA sequence can be read out by replacing each base with its complement and reversing the order.<span> The complementary base pairs are A to T and G to C, so every G is replaced with a C and so on.</span>
B. Cell membrane
Remember cell membrane is the structure aka “wall of the house” is the clear boundary between the cells internal and external environments:))
Hope this helps
The role that ATP plays is that, cells convert energy stored in ATP into Kinetic energy.
