What is the correct term for changes in the elliptical shape of earth’s orbit every 100,000 years?

The correct term for changes in the elliptical shape of Earth’s orbit every 100,000 years can be described by - Milankovitch cycles

These cycle describe the effects of changes in the Earth's movements on its climate over thousands of years. There are three main factors of them: eccentricity, axial tilt, and precession.

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