Difference between synthetic and natural

Explanation:

synthetic is man made and natural is well, self explanatory. like for example, roads and sidewalks of cement are synthetic and grass and soil is natural

the answer is a) a shiprock was formed by igneous process

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a