Answer:
B.
Explanation:
the answer is nucleic acid
Marine debris is defined as any man-made solid material that goes into waterways either directly or indirectly. Eighty percent of the marine debris comes from the land-based sources. Examples of marine debris are soda cans, plastic bag, cigarette waste. Anything that ends up in a water body that has a potential in harming the marine life is a marine debris.
1- Animals survive when they compete. In limited resources, animals either compete, kill or co-operat. There are 3 ways animals complete with each other to get access o limited resources. These ways are:
- Parasitism – In this relationship, one animal gets benefit and the other gets hurt.
- Mutualism – in this interaction, both organisms benefits each other and survives.
- Commensalism- In this interaction, one organism gets benefit whereas the other gets nothing in return.
2- Living organisms are classified as:
- Producers
- Consumers
- Decomposers
Producers are the energy generators. They are the biggest source of energy for other levels. Consumers feed on producers and other animals. And the end, when consumers die, decomposers feed on them, break down their bodies and mix it with soil increase its fertility and the cycle of energy flow goes on.
Obesity is considered as a problem which concerns individual with the highest income. has two major negative effects that mays harm their health:
- It can lead to depression, due to the sedentary lifestyle, the lack of the physical activity, the mocking in the school or in the neighborhood which let the obese being self-contained and leads to depression.
- It can lead to health issue: Obesity means a high blood sugar, triglycerides and cholesterol level, which can rise type 2 diabetes, heart attacks, and strokes risks. It can even lead to cancer or gout if it has a very bad diet.
