It would have to be the second one
To test the effectiveness...
A. This variable should be controlled (the same in both groups).
B. The new chemical is what is being added to the experimental group.
C. This is the control group to which the treated couch should be compared.
D. This is the experimental group to which data should be taken.
Final answer: D
Answer:
i think conversion of mass
Explanation:
Answer: The options are not given, here are the options.
Water flows from a stream to a lake.
Gravity moves rocks to another location.
Lions use energy to catch other animals for food.
Bears dig big holes in the ground to protect their young.
The correct one is Gravity move rock to another location.
Explanation:
The Earth spheres consist of the biosphere which is the living components, Hydrosphere (water), geosphere( rocks) and the atmosphere( gases). The Earth's spheres closely connected that a change in one sphere can result in change in another sphere.
For example, birds fly through the atmosphere, water(Hydrosphere) flow through the soil (lithosphere)