A student is observing a group of cells under a microscope. What observation would help her conclude that they are plant cells? Question 20 options: The presence of nuclei can be clearly detected within each cell. The cells appear well-defined, indicating the presence of cell walls. The presence of mitochondria can be clearly detected within each cell. The cytoplasm in which the cell organelles are embedded can be clearly seen.

If scientists are wrong about earth's age based on radioactive material and the decay rates are really much faster, how would nuclear power plants be affected?

The steps in the formation of extrusive igneous rocks are listed below in an incorrect order: 1. rock melts due to high temperature. 2. rock is buried deep under earth's surface. 3. magma is forced out of earth's surface during volcanic eruption. 4. lava cools and crystallizes to igneous rock. which of these best shows the correct order of steps in the formation of extrusive igneous rocks? 1, 3, 4, 2 2, 1, 3, 4 3, 4, 2, 1 4, 2, 1, 3

_is a product of the first stage of photosynthesis. atpglucosecarbon dioxidewater