Answer:
D
Explanation:
You can immediately eliminate B and C. So between A and D, D is the best answer.
Answer:Silver
Explanation:Silver has the highest electrical conductivity of all metals. In fact, silver defines conductivity - all other metals are compared against it. On a scale of 0 to 100, silver ranks 100, with copper at 97 and gold at 76.
The pollen grain is actually the male gametophyte generation of seed plants. Inside the anther, pollen mother cells divide by meiosis to form pollen grains whose nuclei contain half the number of chromosomes characteristic of the parent plant.
(hope that helped answer the question)
It's when you use something so much that it loses it's value or purpose. But it can also mean making a piece of land more profitable and productive.
