Environmental Indicators and Global Impacts

The second page delves into environmental indicators and their significance in assessing Earth's health.

Definition: Environmental indicators are metrics that help describe the current state of environmental systems.

Highlight: Key global indicators include biodiversity, food production, average global temperature, CO2 levels, human population, and resource depletion.

Example: Biodiversity serves as a crucial indicator, with increasing extinction rates signaling negative environmental impacts.

Systems and Scientific Method

The third page explores systems thinking and introduces the scientific method.

Definition: A system is defined as a set of components that function and interact together, which can be isolated for individual study.

Vocabulary: Open systems receive inputs and produce outputs, while closed systems have no external exchanges.

Highlight: Feedback loops can be either negative (self-correcting) or positive (self-reinforcing), affecting system behavior differently.

Experimental Predictions

The chapter details how to form and test scientific predictions through hypothesis development and testing.

Definition: Predictions are if-then statements derived from hypotheses, linking independent and dependent variables.

Example: "If Fat-B-Gon is taken, then weight loss rates will increase compared to non-users."

Experimental Design Fundamentals

This section outlines crucial elements of experimental design, emphasizing control and consistency in scientific testing.

Highlight: Sample size determination is critical - too small yields unreliable results, while too large demands excessive resources.

Example: In weight loss drug studies, controlling factors like diet, water intake, and exercise ensures valid results.

Introduction to Environmental Science and Systems

The first page introduces fundamental concepts in environmental science, establishing core definitions and frameworks for understanding environmental systems.

Definition: Environmental science is defined as the field of study that examines interactions among human systems and natural conditions including air, salinity, soil, temperature, light, and water.

Vocabulary: Ecosystem refers to both living (biotic) and non-living (abiotic) components within a particular location on Earth.

Highlight: Ecosystem services are categorized into four main types: provisioning, regulating, cultural, and supporting services, each playing crucial roles in maintaining life on Earth.

Example: Provisioning services include tangible benefits like food, drinking water, and timber, while regulating services encompass climate control and flood regulation.