Carbon-14 is useful to estimate the date of fossils that are less than 50,000 years old.
Option C
<u>Explanation:</u>
Carbon-14 is the best option to use by estimating the date of fossils that are below 50,000 years old. This is because the carbon-14' half-life is around 5730 years i.e. the existing Carbon-14 in the living bodies decays in 5730 years once they die.
That's the reason Carbon dating utilized to estimate the age of objects that are below 50,000 years old. Objects such as dead plants, wood or human artifacts that are younger than 50,000 years.
After the death of living beings, Carbon 12 and Carbon 14 existing in these organisms starts decaying by converting into Nitrogen. By estimating the leftover amount of carbon 14 in their bodies, scientists can evaluate their age.
Answer:
D
Explanation:
bird eggs don't need additional moisture that some reptiles absorb with their eggshells
The answer to this question would be: Stomach(gaster), HCl
Protein digestion happens in the stomach. The stomach will secrete the acid which was HCl to kill bacteria inside food and denatures the protein. The acid also activates pepsin enzyme and in turn, will digest the protein into smaller amino acids.
Answer:
Aerobic respiration is the process or set of cycles that producing cellular energy with the help of oxygen. In this process cells, breakdown glucose in the multi-step process in which the very first step is glycolysis, the second is the Krebs's cycle and the third is the electron transport system in the mitochondria.
<u>Glycolysis</u>: It is the first step of cellular respiration that is enzyme based metabolic reaction that converts glucose into pyruvate and releases energy in the form of ATP and NADH. The net gain of the pathway is two ATP and two NADH.
Pyruvate oxidative link is an intermediate reaction between glycolysis and Krebs cycle that converts pyruvate to acetyl CoA.
<u>Krebs cycle:</u> It is a pathway involves chemical reactions release stored energy through the oxidation of acetyl CoA derived from pyruvate into adenosine triphosphate and carbon dioxide.
<u>Electron transport system:</u> all previous steps reduce the electron carriers to NADH + H+ and FADH2. Then these donate protons and electrons to the electron carrier proteins of the ETS system. In the end, the electron accepted by oxygen.
Answer:
kaa·luh·jn
Explanation:
The first syllable has the emphasis.
