What prevents lipids from mixing with water

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

The basic kind of life cycle found in the simplest animals is: haplontic or diplontic