The population of humans on Earth has grown exponentially over time. It is believed that eventually the population will reach the maximum number that Earth's resources can sustain. This number is called Earth's A. carrying capacity B. extinction C. thriving population D. homeostasis

Human population growth refers to the increasing number of people living on Earth over time. For most of history, human population grew very slowly due to limited resources and high mortality rates. However, since the Industrial Revolution, population numbers have skyrocketed. Advances in medicine, technology, and agriculture have allowed humans to live longer and healthier lives. This rapid growth can be visualized as an exponential curve, where the population doubles faster and faster. Understanding population growth is crucial because it helps us predict future resource needs and plan for sustainable development. As human numbers continue to rise, the demand for resources such as food, water, and energy also increases. This creates challenges for ensuring everyone has access to basic necessities.

Sustainable resources are key to supporting human life without depleting the Earth's natural assets. These include renewable resources like sunlight, wind, and water, which can be replenished naturally. Sustainable resource management means using these resources in a way that meets current needs while ensuring that future generations can also benefit from them. Key concepts of sustainability include conservation, efficiency, and renewable energy. Conservation involves protecting natural areas and wildlife, thus preserving biodiversity. Efficiency means using resources wisely to minimize waste. Renewable energy sources, such as solar and wind power, offer cleaner alternatives to fossil fuels, reducing environmental impact.

Environmental science is the study of how humans interact with their environment and the effects of these interactions on the Earth's ecosystem. This field combines elements of biology, chemistry, physics, and social sciences to address complex environmental issues. Important topics within environmental science include climate change, pollution, and conservation. Climate change refers to long-term shifts in global weather patterns, largely due to human activities like burning fossil fuels. Pollution involves the contamination of air, water, and soil, which can harm health and ecosystems. Conservation focuses on protecting natural habitats and species from extinction. By studying these topics, environmental scientists aim to develop sustainable solutions for maintaining a healthy planet. This knowledge is crucial for making informed decisions about how we manage resources and protect the environment for future generations.