.Most life-forms that existed on Earth have become extinct.
<span>.Dinosaurs existed on Earth for more than 544 million years.
Both these statements are well suported by fossil record.</span>
Answer:
B) serendipitous
Explanation:
Serendipitous discovery is a type of discovery that occurs when unplanned events about things that are surprising are made, rather than being discovered through planned investigation. This type of discovery is mostly accidental or by chance. Casey’s idea that emanated from the accidental discovery of a problem computer engineers have, which led to the idea of coming up with a new product that is beneficial is simply an example of serendipitous discovery.
Explanation:
Gas poisoning in our environment is a major problem due to its high incidence. In the specific case of carbon monoxide poisoning, it is the leading cause of death due to involuntary poisoning in our environment, often coexisting with cyanide poisoning. Both poisonings can be serious, based on their diagnosis on the mere suspicion of the doctor. In addition, its importance lies in the fact that both poisonings have a specific treatment. Normo or hyperbaric oxygen therapy is the treatment of choice for carbon monoxide poisoning. In the case of cyanide poisoning, hydroxocobalamin is today the treatment of choice, as it has proven to be an effective antidote.
Answer:
The second step in cellular respiration is called the Krebs cycle. The Krebs cycle uses pyruvic acid to create ATP, along with additional molecules like NADH, FADH2, and CO2. The NADH and FADH2 molecules are used during the final step of cellular respiration, while the CO2 is exhaled