Jenny is learning about the importance of the ozone layer. she was upset to know that there is a depletion of the ozone layer and human activities are adding to it. while she decides to spread awareness on the effects of pollution and reasons to curb it, she cannot do anything about the natural process of ozone depletion. what is the natural process that is causing the depletion of the ozone layer? a. one that ensures ecological balance. burning of fossil fuelc. uv rays reacting with the o2 molecules. carbon cycle. oxygen cycle

UV rays reacting with the O2 molecules (Option C)  

Explanation:

Ozone in the earth's stratosphere is created by UV light striking oxygen molecules containing two oxygen atoms, splitting them into individual oxygen atoms called atomic oxygen. then atomic oxygen combines with unbroken O2 to create ozone (O3)

There are other causes of ozone depletion  as well :

Human activity such as the release of various compounds containing CFC’s is a major cause of ozone damage. CFC is the most evident and the most destructive molecule.  Natural sources also contributes to the depletion of the ozone layer.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.