Radioactive decay of 40K atoms in an igneous rock has resulted in a ratio of 25 percent 40K atoms to 75 percent 40Ar and 40Ca atoms. <span>this rock </span>2.6 10^9 y years old. The answer is number 3. The rest of teh choices do not answer the question above.
As the largest biome, the open ocean covers over 45% of Earth's surface. But compared to the coast, the open ocean is sparsely populated, almost like an ocean desert.
The new climate goal is to end most fossil fuel burning, thus, reducing climate-changing impacts. This is one of the options spelled out in a U.N. document that’s being negotiated<span>, which is expected to be finalized during end-of-year talks in Paris. We</span><span> could aggressively turn to cleaner energy supplies and efficiency projects so as to end the need to use fossil fuels. </span>We need to set a goal that requires an end to the growth in the amount of greenhouse gas pollution that’s added each year to the atmosphere. Another option <span>would be based on reaching carbon neutrality — a world in which we pump out less greenhouse gas pollution than we bury, such as by replanting forests, or perhaps through geoengineering projects.</span>
The Kuiper belt is a formation of debris and huge rocks that form a “belt” most debris and objects funnel towards this particular belt after they are leftover from the formation of the solar system
Answer:
B . a moral person
Explanation:
The ultimate goal of Confucianism is to teach a person how to become a moral person.