Answer:
Option (D).
Explanation:
Pesticides are the chemical used to kill the harmful organism that are categorized as pest. Pesticides can be used ti kill plants, fungi, animal and other microorganism.
Pesticides include herbicides, fungicides and insecticides. Pesticides can be used safely for the non target organisms but under normal use conditions only.
Thus, the correct answer is option (D).
Answer:
Saliva contain enzymes.
Explanation:
In the mouth, when chewing a bite of bread, it mixes with the saliva in the mouth which is secreted by the salivary gland. The food is broken down by chewing which is converted into Bolus through the saliva. The saliva comprises of digestive salivary amylase which help to digest carbohydrates and breakdown carbohydrates into smaller pieces.
Bread is a carbohydrate, digestive salivary amylase breakdown bread into sugars.
Therefore, digestion begin from the mouth and it contain saliva which comprises of the enzymes.
Here is a link that can help you.
http://study.com/academy/lesson/what-is-an-organ-system-definition-pictures-quiz.html
Answer:
B. centrioles
Explanation:
Plant cells have cell walls, cell membranes and also contain mitochondria along the chloroplasts.
Answer:
Maybe as a producer can be a tree or grass
Explanation:
therefore i think there can be more than one
