What is a homologous structure? A. A structure with similar shape but a different use
B. A structure that is only in index fossils
C. A structure that only exists in the embryo
D. A structure that has no use in the organism

Match the order of the levels of organization in nature with the correct description. example: atoms are fundamental units of matter= level 1levels- 2,3,4,5,6,7,8.now what levels are these? population consists of organismscells consist of moleculesecosystems consist of communities interacting with there environmentmolecules consist of atomsthe biosphere consist of all ecosystems on earthcommunities consists of populationorganisms consist of cells

Which is essential for finding the biomass of spinach

What term is applied to a scientist who studies ancient life including animal and plant fossils