Hi there!
We can determine what the dependent and independent variables are in this experiment so that we can narrow down what factors need to be constant.
Dependent variable - Growth of the plants
Independent variable(s) - Calcium powder
The control variable are the constant variables in an experiment kept constant to ensure the results of the experiment are valid. Therefore, in this experiment the control variables are...
Control variables - Amount of water, sunlight, type of pea plant, mode of measuring the growth
The common features present are;
- Presence of DNA material in one or morechromosomes
- They both have a plasma membrane that has a phospholipid bilayer with proteins
- They both contain cytoplasma that contains the cytosol and organnels
- They both have ribosomes for the synthesis of proteins.
Answer:
Actually, the remains of a Hadrosaur are an example of a body fossil, or fossils of the actual organism. Typically, hard structures like bones, shells, and teeth fossilize more often than soft-bodied structures like tissues or plant leaves, but as is seen with the horsetail relative, plants can become fossils.
Explanation: