I believe it is c. The setting has little affect on the reader of a mystery.
The answer is option A.
The Student identifies the test tube
that stops bubbling first contains the catalyst.
Because Catalyst is a substance which
increases the rate of reaction, and the reaction shows that when a product is
obtained bubbles formed.
<span>When the student added X, Y and Z to the
test tubes. The one which is a catalyst fastened the reaction.</span>
The fossil record shows a sequence from simple bacteria to more complicated organisms through time, it is very reliable because it is physical evidence and by studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth.
Answer:
Mineral salt
Explanation:
The mineral salt is absorbed into the roots inform of ions (from the soil) through the process of diffusion
Answer: A. Log file
Explanation:
a file that records either events that occur in an operating system
