<span>A method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.</span>
Answer:
I don't want to give wrong answer, but here is what ik kiddo;
Explanation:
An experimental group is the group that receives the variable being tested in an experiment. The control group is the group in an experiment that does not receive the variable you are testing.
HOPE IT HELPS!!
Answer: the answer is A, producers are any organism below the top consumers
Explanation:
its the most obvious answer there is and producers give the consumers energy and what ever eats them, its just acycle
Answer:
randomly select different areas to count the dandelions, average the numbers and then multiply by the number of plots your grid contains. 6. In a forest that measures 5 miles by 5 miles, a sample was taken to count the number of silver maple trees in the forest.
<h2>Answer:</h2>
Because cell structure is not uniform from every side and in every section.
<h3>Explanation:</h3>
A cell is a unit of life and it contains all the structure which are important for the functions of a life.
Cell contains nucleus for genetic material storage and replication. It contains mitochondria for respiration and ribosomes for protein production. Apart from these structures it contains golgi apparatus, endoplasmic reticulum, lysosomes and cell membrane. Except cell membrane their structures are not uniformally distributed.
That's why biologists often cut several sections from a cell to find out about its structure.
