Passage 5: The Human Body
The human body is a complex organism composed of various systems that work together to maintain life. These systems include the skeletal system, muscular system, circulatory system, respiratory system, digestive system, and nervous system.
The skeletal system provides structural support and protection for internal organs, while the muscular system enables movement through contractions of muscles. The circulatory system transports oxygen and nutrients throughout the body via blood vessels, and the respiratory system facilitates the exchange of oxygen and carbon dioxide in the lungs.
The digestive system breaks down food into nutrients that can be absorbed and utilized by the body, while the nervous system coordinates bodily functions through electrical signals transmitted by neurons.
Understanding the human body is essential for maintaining health and diagnosing medical conditions. Advances in medical technology allow for more accurate diagnosis and treatment of diseases.
What is the function of the skeletal system?
A) Producing hormones
B) Providing structural support and protection
C) Digesting food
D) Transporting oxygen
How does the circulatory system transport oxygen and nutrients?
A) Through nerve impulses
B) Through blood vessels
C) Through muscles
D) Through bones
Passage 6: Climate Change
Climate change refers to long-term shifts in temperature, precipitation patterns, and other atmospheric conditions due to human activities such as burning fossil fuels and deforestation. These activities release greenhouse gases like carbon dioxide into the atmosphere, trapping heat and causing global temperatures to rise.
The impacts of climate change include rising sea levels, melting polar ice caps, more frequent extreme weather events, and disruptions to ecosystems. These changes pose significant challenges to biodiversity, agriculture, and human health.
Addressing climate change requires collective action at local, national, and international levels. Transitioning to renewable energy sources, reducing carbon emissions, and promoting sustainable practices are key strategies to mitigate the effects of climate change and build a more resilient future.