What Can Scientists Study in the Fossil Record to Learn

question 40

Multiple Choice

What can scientists study in the fossil record to learn about the distribution of grasses in the past?

• A)herbivore teeth
• B)herbivore hooves
• C)stromatolites
• D)phytoliths
• E)the ratio of different carbon isotopes in fossils

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Definitions:

Extraembryonic Membranes

Membranes that develop outside of the embryo in amniotes, providing protection, nutrition, gas exchange, and waste elimination.

Synapsis

The pairing of two homologous chromosomes that occurs during meiosis, allowing for genetic recombination.

Primary Germ Layers

The three initial layers of cells (ectoderm, mesoderm, and endoderm) in the early embryo from which all bodily tissues and organs develop.

Digestive Organs

Organs involved in the digestion process, including the mouth, esophagus, stomach, liver, gallbladder, pancreas, intestines, rectum, and anus.