Answer:
He should look out for tiny leaf-like structures which mosses possess but algae does not .
Explanation:
In general, moss looks fibrous, feathered or latticed when viewed up close. Carpets of moss are springy to the touch. When germinating, moss puts up thin stems sometimes with leaves on top and reproductive spores. Algae have no threadlike structures or leaves. Instead, algae spread as a clump of living cells. Because algae usually grow in wet environments, they look like a slimy, wet mass, often green in color. Both moss and algae may appear green or brown depending on species and the dryness of the conditions.
Scientific investigations on Sudbury's soil revealed the decrease
in soil pH was correlated with increased copper and nickel levels.
Independent variable - juice
Dependent variable - stacks of paper made
Control - group B
Constant - Task
<h3>Research variables</h3>
In every scientific investigation, there are different variables. These include:
- Independent variables: These are the variables that are supplied by the researcher and often varied to produce different effects. It is often referred to as the 'cause' variable.
- Dependent variables: These are variables that are measured in the course of research. They are a result of the effects of the independent variable on the experimental subjects or groups. They are otherwise known as 'effect' variables.
- Constant variables: Variables that are applicable to all experimental groups and are usually kept constant.
Also, there are different groups in research:
- Control group: The reference group. The group that is not fed with the independent variable and forms the basis for comparison in order to understand the effects of the independent variable.
- The experimental group: The group that is fed with the independent variable.
More on research variables can be found here: brainly.com/question/25115889
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Answer:
Polypeptide
Explanation:
Amino acids are the building block and simplest unit of protein molecules. The structural composition of each amino acids is made up of an amine group (-NH2), a carboxylic acid group (-COOH), a hydrogen atom (H) and a R side chain that differentiates every amino acid from one another.
In a reaction process called condensation, amino acids are chemically joined together via the amine group of one and the carboxylic group of another. This process releases water molecule (H20) to form a bond called PEPTIDE bond between the amino acids. Several amino acids in their 100’s or 1000’s that are chemically joined this way forms a POLYPEPTIDE chain, which in turn forms the protein molecule.
