Excessive soil compaction impedes root growth and therefore limits the amount of soil explored by roots. This, in turn, can decrease the plant's ability to take up nutrients and water. From the standpoint of crop production, the adverse effect of soil compaction on water flow and storage may be more serious than the direct effect of soil compaction on root growth. Alos, it can decrease a plants healthy ness according to water and nutrients
Answer:
how the secondary data were collected.
Explanation:
Secondary data refers to the data that is collected by other persons beside the researcher who actually use it. (in this context, it would be the data that is collected by other person than Marvin).
Sometimes, the collection method could influence the data given by the samples and will shaken up the overall conclusions.
I'll give you an example.
In market research, companies often conducts research to find out consumers' preference toward a certain product. This preference could be given by the people through either public survey and private survey. Most people tend to give a more truthful answer if the data is collected through private survey since answering in public survey makes the people fear a chance that they will be judged by others.
If we read the Minnesota Study of Twins Reared Apart, we can find out the following statement:
- According to the Minnesota Study of Twins Reared Apart, <u>identical</u> twins have very similar personalities when <u>raise apart.</u>
As well as identical twins that are raise together, reared apart identical twins have very similar personalities too.
Check more information in the following link brainly.com/question/986349?referrer=searchResults
To block the formation of cancerous tumors.
The relationship between international trade agreements and protectionist policies is A. International trade agreements usually mitigate protectionist trade policies by reducing barriers to trade.
<h3>How do trade agreements relate with protectionist polices?</h3>
Protectionist trade policies are instituted in order to reduce imports from other nations while international trade policies are done to improve trade and imports.
This means that international policies work to mitigate protectionist policies by encouraging international trade.
Find out more on international trade agreements at brainly.com/question/1465144.
#SPJ1
