Answer:
By dating the rocks in Earth's ever-changing crust, as well as the rocks in Earth's neighbors, such as the moon and visiting meteorites, scientists have calculated that Earth is 4.54 billion years old, with an error range of 50 million years.
Answer:
I believe the answer is Plasma Membrane.
Explanation:
The plasma membrane also plays a vital role in regulating the movement of substances in and out of the cell.
Hope this helps! ^^
Answer:
chromosome
Explanation:
A chromosome consists of entire set of genes with in an organism’s total population.
DNA with is a chromosome is arranged in a discrete short and wide units. A chromosome consists of millions of DNA base pairs which consists of large number of genes. The chromosome structure comprises of double helix DNA wrapped around proteins. DNA with in chromosome provide basis for chromosome synthesis.
They use their spines with tiny hairs on them to move and push food towards their mouths.
Answer:
This is caused by osmosis and re-absorption.
