Which type of scientific statement is defined as a possible explanation or answer to a scientific question that is based on prior knowledge or research and is testable?

Which of these statements are true about scientific theories and hypothesis

Why are fossils not found in igneous rocks? igneous rocks are made from cooling of lava or magma. igneous rocks are found too deep underground. igneous rocks are too dark in color to contain fossils. igneous rocks are too dense to contain fossils.

According to this food web which of the following would be considered primary consumers