Once the Earth was full of water (ocean) after volcanic activities the mainland became land ( sorry about my english i am hungarian and i am still learning the language )
Energy and matter characterize both physical and biological systems. These systems are defined both by the types of energy and matter they contain and by how that matter and energy move through and between systems. ... This means that energy and matter can change forms but cannot be created or destroyed.
The main difference<span> is in the presence of a carbon atom. O</span>rganic compounds<span> will contain a carbon atom.</span><span> Do you have answer choices?</span>
Answer:
a. Proteins
Explanation:
Chromosomes are made up of DNA tightly coiled many times around proteins