The guidelines for making good and accurate observations are:
1. Standardise the experimental setup: Know the precision and the accuracy of the instrument used to make observations. Example, thermometer with a least count of 1°C cannot measure in fractional values.
2.Take careful measurements: Holding the instrument properly without causing any disturbance is the key.
Answer: Option A.
Herbivores
Explanation:
It is Herbivores because they are group of organism that eat plants and they have cecum. The cecum store good material and contain bacteria. These bacteria help to breakdown to breakdown cellulose into smaller particles where it is easily absorbed.
The bacteria benefit by feeding on the waste reminants and receive accomodation and the herbivores benefit and receive help from the bacteria because the bacteria help them to digest cellulose.
Answer:YES
Explanation:A PDA is a type of congenital heart defect. A congenital heart defect is any type of heart problem that's present at birth. If your baby has a PDA but an otherwise normal heart, the PDA may shrink and go away. Some children need treatment to close their PDAs.