Answer:
Thank you but someone may report and delete this question
Explanation:
Coal was created through the decomposition of ancient trees. Most of the coal was was formed 300 million years ago. At the time the earth was covered by swamps. When the ancient plants and trees died, their remains sank to the bottom of the those areas, making layers and layers of plant material and eventually forming a soggy, thick material called PEAT. Over time other materials covered the PEAT and due to pressure the PEAT turned to coal.
Answer:
e. minimizes any potential differences between the control and experimental groups.
Explanation:
Random assignment -
It refers to the process during an experiment to make sure than all the participants are given equal opportunity , is referred to as random assignment .
It is also known as random placement .
The method is adapted in order to avoid any bias behavior during the experiment .
The method helps to ensure any difference between the groups , in the end of the experiment .
Hence , from the given question ,
The correct option is e.
Answer:
Patented products
Explanation:
A patent is an exclusive right given to the owner of a product or a work of art that restricts other person's from using using, selling or distributing the work over a period of time.
It is often gotten to help protect the originator of a product or piece of artwork right.
Patented products are therefore products for which these exclusive rights are gotten. It is an environmental concern that affects society because most of the items listed in the question used in industry and manufacturing processes hardly have patents.
