Answer:
Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.
<span>Conservation strategies that set aside ecosystems for preservation </span>are the best way to preserve an area's diversity.
The World Wildlife Fund says that the conservation strategies that focus on ecosystems for preservation have an impact on preserving and area's diversity because it is a complete, healthy ecosystem, filled with all that is part of it, that will maintain the diversity of its area - for example, if a species of a tree from a certain ecosystem was to be extinct, not only that species would disappear, reducing already by itself the diversity of the area, but it would also affect other species taking them probably also to eventual extinction, once more reducing the diversity of the area.
After the worms have finished eating their food, the students must now weigh the worms and record this data. They can then compare these new weights to the starting weights of the worms and see if it demonstrates their hypothesis. Hope this helped :)
