Answer: Option B. core samples
Explanation: this is the only option that is not used for locating minerals
Answer:
keystone species
Explanation:
Keystone species are species that are very critical to the balance and existence of an ecosystem. They are important species that play a major role in determining the overall diversity in a particular ecosystem. The presence or the removal of a keystone species from an ecosystem would certainly have an effect on the existence of other species in that particular ecosystem.
For example, the gray wolf in the Yellowstone ecosystem can be regarded as a keystone species, as their removal brought about an avast and drastic change to the ecosystem of the park. The gray wolf's predatory activities is said to be fundamental and important in maintaining the balance of the ecosystem of the park and also maintaining its overall species diversity.
Answer:
Blueshift is observed when relatively large lattice spacing is decreased due to radiative dipole interactions between nanoparticles.