Tag «ecology»

LS2A – Interdependent Relationships in Ecosystems

LS2A – Interdependent Relationships in Ecosystems

Hi. It’s Paul Andersen and this Life Science Disciplinary Core Idea 2A (LS2A). It’s on Interdependent Relationships in Ecosystems. So this is at the level of ecosystems so how communities, how biotic and abiotic factors all work together to create life on our planet. And so how do we get students to that level of …

Ecological Relationships

Ecological Relationships

Captions are on! Click CC at bottom right to turn off. Hear updates by following us on Twitter (@AmoebaSisters) or Facebook! I really did not like sandboxes as a kid. It’s not that I have a problem with sand or sand on the beach for sand castles. Just sand boxes. See, as a little kid, …

What If The World Went Vegetarian?

What If The World Went Vegetarian?

Chances are you or someone you know is vegetarian – so we thought we’d try a thought experiment. What would happen if everyone in the world was suddenly a vegetarian? What effect would it have on our lives and the planet? Before we begin, full disclosure: none of us at AsapSCIENCE are vegetarians. And the …

2.3.2 Estimating a Population (The Lincoln Index)

2.3.2  Estimating a Population (The Lincoln Index)

In today’s lesson we describe and evaluate a method for estimating the abundance of organisms and our aim is to estimate a population of the brown garden snail Helix aspersa using the capture mark release recapture method also known as the lincoln index in your picture is Helix aspersa the brown garden snail as you …