In which situation is the principle of cross-cutting relationships useful in determining relative age? 1. A fault breaks through sedimentary layers.

2. Fossils of two different species are found in different rock layers.

3. Sedimentary layers form over millions of years in a lake bottom.

4.Lava flows form on top of one another from several eruptions over time.

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MARK BRAINIST

Select all the correct answers. lactobacillus is a bacteria that live inside humans. these bacteria live on the nutrients from our bodies. they to keep our gut clean and healthy. s. typhi is a bacteria that enter our bodies through contaminated food. this bacteria causes infections in the body. based on this information, which two statements about the association between these bacteria and humans are true? a. lactobacillus shares a parasitic relationship with humans. b. s .typhi shares a parasitic relationship with humans. c. both lactobacillus and s. typhi share a parasitic relationship with humans. d. both lactobacillus and s. typhi share a mutualistic relationship with humans. e. lactobacillus shares a mutualistic relationship with humans, and s. typhi shares a parasitic relationship multiply chrse

Most of the fossils found in virginia are in the coastal plain, valley, ridge, and appalachian plateau regions, best suggesting that these geographic provinces a) were once covered by seawater. b) are the oldest parts of virginia. c) have a great deal of karst topography. d) have large amounts of sedimentary rock.

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?