They converted carbon dioxide to oxygen. The increased oxygen levels allowed for cellular respiration to occur instead of only glycolysis. The atmosphere became thinner, decreasing temperatures of the planet as well.
To break down solids, and digest all food so it goes through the whole system smoothly.
Answer:
The correct answer would be D) tissue.
In biology, the level of organisation from simplest to complex level can be summarized as:
Organelles → cells → tissues → organs → organ systems → organisms → populations →communities → ecosystem → biosphere.
It is clear that tissue is organization level that exists between cells and organs.
When similar cells are assembled together to perform specific function, the assembly or this organization is said to be the tissue.
There can be different types of tissues such as muscle tissue, nerve tissue et cetera.
Similarly, tissues arrange themselves to carry out specific function in the form of organ.
For example, heart is made up of cardiac tissue.
Image result for Which protein separates the DNA strand
DNA replication proteins. Also known as helix destabilizing enzyme. Helicase separates the two strands of DNA at the Replication Fork behind the topoisomerase. The enzyme responsible for catalyzing the addition of nucleotide substrates to DNA in the 5′ to 3′ direction during DNA replication.
<span>For the most part, skin cancers are acquired through sun exposure so are more environmental rather than genetic. However, we do inherit our skin type from our parents so there is an indirect inherited predisposition to cancer. For example, a person whose skin is very white and fair is more likely to accumulate sun damage rather than a person whose skin is darker and has more inherent sun protection.</span>
