<span>Sage, rosemary, thyme and oregano shrubs produce irritating or toxic substances in their roots so that other plants can't grow close to them.</span>
The side group, usually simply represented by an “R” attached to the carbon between the carboxyl and amine group.
Answer:
The average density of deer in 1923 was 1 deer per 8 acres
Explanation:
Given -
In 1923, the population of deer rose to 
The density of any species is equal to total population divided by total area of the land in which this population is residing.

Where d represents the density
P represents the population and
A represents the area of land
Substituting the given values in above equation, we get -

Thus, the average density of deer in 1923 was 1 deer per 8 acres
Answer:
a
Explanation:
Definition. "Acid rain" is a popular term referring to the deposition of a mixture from wet (rain, snow, sleet, fog, cloudwater, and dew) and dry (acidifying particles and gases) acidic components. ... Unpolluted rain can also contain other chemicals which affect its pH (acidity level).