Hello again!
Pendulums are common devices that scientists use to demonstrate concepts of motion, but they aren’t limited to the confines of a science classroom. In fact, pendulums are all around us. They are used to keep time (clocks) or to have fun on a playground (swings). Some pendulums, such as the one in the photograph, are used to demonstrate the Earth’s rotatation. In this lab activity, you will create a pendulum and manipulate its components to test factors that control the motion of its swing.
An inability to report that the two (2) rows in set B contain the same number of dots by Rebecca reflects a lack of conservation.
<h3>What is cognitive development?</h3>
Cognitive development refers to the development of learning skills, thought processes, knowledge and problem-solving abilities in living organisms such as humans, especially from infancy through adulthood.
In Psychology, conservation can be defined as a logical thinking ability that allows a living organism to understand that physical quantities such as lines, doesn't change in amount even when their appearance are altered.
Read more on cognitive development here: brainly.com/question/8893006
Explanation:
I want to say your answer is (D)- b and c.
Decomposers turn detritus to soil which then get assimilated by producers. The process is used by plants to create glucose