1.if two organisms are in the same order, then they have to be in the same a. family b. genus c. species d. phylum 2. based on the classification system, which subgroup would you find at the bottom? a. species b. domain c. class d. phylum

1. D. phylum

The classification of organism would look like a reversed pyramid where the more general group in the top. If two organisms are in the same order, they should have similar classification on the top of the order. Classification above the Order would be Class, Phylum, Kingdom and Domain. Famlly, Genus and Species would be under the Order.

2. Answer is A.species

The lowest part of taxonomy hierarchy is called species. Organism in the same species will have the most similar so that they able to reproduce between them even if they look somewhat different. All species is given two word name (called binomial) that made from their genus and species.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.