67 million years ago in the form of phyollths (small sllica flecks in grass that make it difficult to digest)
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Genetic resistance (or genetic tolerance) refers to the ability of certain organisms to endure environmental conditions that are extremely stressful or lethal to non-adapted individuals of the same species
Explanation:
Answer:
Rhodopsin is the photopigment in rods.
Answer:
Groundwater is the water available under Earth's surface in soil pore spaces and in the fractures of rock formations. A unit of rock also known as a unconsolidated deposit is called an aquifer when it can yield a usable quantity of water.
Explanation: