Effects of resource availability on organisms and populations of organisms in an ecosystem Video Lesson

About This Video

Curriculum-aligned Grade 7 Science lesson video for Effects of resource availability on organisms and populations of organisms in an ecosystem. Use it for classroom preview, instruction support, or home review.

This watch page is dedicated to the video. For the complete text lesson plan, activities, standards alignment, and answer guides, use the companion lesson page: Effects of resource availability on organisms and populations of organisms in an ecosystem lesson plan.

Video Learning Notes

Resource availability is a key factor that affects the growth and reproduction of individual organisms and the size of populations in ecosystems. When resources such as food, water, and oxygen are abundant, organisms can grow and populations can increase. When resources are scarce, growth and reproduction are limited, leading to smaller populations. Organisms compete for limited resources, which constrains their survival and reproduction. By analyzing data and constructing explanations based on evidence, students understand the cause-and-effect relationships that govern ecosystem dynamics.

Learning Goals

• Analyze and interpret data to provide evidence for how resource availability affects individual organisms in an ecosystem.
• Analyze and interpret data to provide evidence for how resource availability affects populations of organisms in an ecosystem.
• Construct explanations using evidence to describe cause-and-effect relationships between resource availability and organism growth or population changes.
• Revise scientific claims based on new evidence or discussion about resource availability and ecosystem dynamics.

Curriculum Context

Grade: Grade 7

Subject: Science

Curriculum: NGSS