What always affects measurement error in an experiment?

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?

What is the function of the root cap? a. extra-absorbent cells in the root cap absorb more water and nutrients b. protect the meristematic area of the stem c. contains sensors for sunlight d. increases surface area of the root