Disease
Disease is a condition that impairs the normal functioning of an organism. It can be caused by a variety of factors such as pathogens, genetic mutations, environmental factors, and lifestyle choices.
Types of Diseases
- Infectious diseases: Caused by pathogens such as bacteria, viruses, fungi, and parasites.
- Non-infectious diseases: Caused by genetic factors, environmental factors, and lifestyle choices.
- Communicable diseases: Can be transmitted from one person to another, such as the flu or COVID-19.
- Non-communicable diseases: Cannot be transmitted from one person to another, such as diabetes or cancer.
Causes of Diseases
- Pathogens: Microorganisms that cause infectious diseases.
- Genetic mutations: Changes in the DNA that can lead to genetic diseases.
- Environmental factors: Pollution, radiation, and other environmental factors can contribute to the development of diseases.
- Lifestyle choices: Poor diet, lack of exercise, smoking, and excessive alcohol consumption can increase the risk of various diseases.
Prevention and Treatment
Preventing and treating diseases often involves a combination of strategies including vaccination, good hygiene practices, healthy lifestyle choices, and medical interventions such as medications and surgeries.
Study Guide Questions
.◂Biology Worksheets and Study Guides High School. Ecology I
Worksheet/Answer key
Ecology I 
Worksheet/Answer key
Ecology I Worksheet/Answer key
Ecology I Worksheet/Answer key
Ecology I Vocabulary/Answer key
Ecology I Vocabulary/Answer key
Ecology I
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE (NGSS)
Ecosystems: Interactions, Energy, and Dynamics
Students who demonstrate understanding can:
Construct and revise an explanation based on evidence for the cycling of matter and flow of energy in aerobic and anaerobic conditions.
Use mathematical representations to support claims for the cycling of matter and flow of energy among organisms in an ecosystem.
Evaluate the claims, evidence, and reasoning that the complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions may result in a new ecosystem.