Q: What is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements called? Choices: - nuclear decay - radioactive decrease - initial decay - radioactive decay A:
radioactive decay

(Question)
Q: What is a soft, gray, nontoxic alkaline earth metal? Choices: - pewter - magnesium - potassium - calcium A:
(Answer)
calcium

Ques: Q: What are the two classifications of factors in the environment that affect organisms? Choices: - shear and abiotic - rotational and abiotic - Antibiotick and abiotic - biotic and abiotic A:
Ans: biotic and abiotic

(Q).
Q: Conservation of what property of ecosystems is the aim of measures like the endangered species act? Choices: - bioremediation - natural selection - Allopatric speciation - biodiversity A:
(A).
biodiversity

Ques:Q: Whether focused on ancient life, the life of bacteria, or how humans could live on the moon, four unifying principles form the basis of what branch of science? Choices: - electronics - chemistry - geology - biology A:

Ans:biology

Question: Q: Coral reefs are a type of what large community and have the highest biodiversity on earth? Choices: - taxon - phylum - order - biome A:
Answer:
biome