Base on the question that asks to choose among the following choices that is significance of the apical meristem, base on the fact, apical meristem is found at the apices or tips of the plant, both the tip of the shoot and the root and is a region of actively dividing cells. Base on that the answer would be "It provide strength to the plant by facilitating secondary growth"
C. In radiometric dating, scientists place samples of a fossil in certain liquids until the samples dissolve. The rate at which they dissolve indicates the age of the fossil.
Answer:
2.5 mg
Explanation:
<em>The half-life of a substance is the time required for one half of the substance to decay. In order words, it is the time it will take for a substance to decay into half of its initial size.</em>
For a 20 mg element with a half-life of 30 which decays over a period of 90 years;
The first 30 years, 10 mg would have decayed, remaining 10 mg
The second 30 years, the remaining 10 mg would have decayed to 5 mg
The third 30 years, 5mg would have decayed to 2.5 mg.
Hence, in 90 years, 20 mg of the element would <u>remain only 2.5 mg.</u>
Answer:
D. NaCl
Explanation:
The products are always on the right side of the equation!!!
