Plz help

Two students are comparing scientific experiments to investigations. They came up with the following ideas.

Student A: Testing plant growth in different types of soils
Student B: Comparing the water level in a lake during different times of the year

Which student gave an example of a scientific experiment? (5 points)

Student A because it requires experimental and control groups

Student B because it requires a hypothesis

Student A because it is preferably done in natural settings

Student B because it is preferably done across a long period of time

Student A becasue it requires experimental and control groups

Explanation:

An experiment should include a dependent variable (which does not change) and an independent variable and student B doesnt have enough requirements

A

Explanation:

The other answers don’t make sense so do process of elimination

1. the energy lost to disorder metabolism     -entropy

2. related to or possessing motion potential     -kinetic

3. all of the chemical reactions in an organism required for maintenance of the processes of life entropy     -metabolism

4. possible; ability to go into action or perform work kinetic     -potential

5. the study of energy and its transformations thermodynamics     -thermodynamics

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.