Lesson 1: Food Web Dynamics. Forces activity. Dichotomous key classification. Plant Identification Game Using an Online Interactive Dichotomous Key Introduction: By looking at characteristics of a plant or animal and using a dichotomous key, you can identify most living things to the species.
In this situation the term "dichotomous" means to divide into two groups that are not alike and most dichotomous keys work by using the individuals characteristics to place the organism into smaller and smaller groups until it can be identified to the species. Dichotomous keys usually include only certain groups of organisms, like trees or butterflies. Water Cycle - Animated Diagram. Continental Drift: Interactive Animation. Carbon Footprint calculator.
Is the world getting warmer? If you look at the graph below of global temperature changes over the past 150 years, the answer would have to be yes. But what if we look at the past 1,000 years, 100,000 years, or more? Genes and Appearance. In this activity, you will change the way a dragon looks by changing its genes.
Introduction How do genes determine appearance? As we all know, dragons are fictional animals, but they work well for learning genetics. Dragons have very few heritable traits, and most of those traits are controlled by single genes with a simple dominant-recessive pattern of inheritance. Diffusion and Osmosis lab. Map of the Human Heart. Map of the Human Heart Day and night, the muscles of your heart contract and relax to pump blood throughout your body.
In the Step Thru below, see the complicated path the blood takes as it moves in and out of the heart. Step Thru Animation Oxygen-poor blood (shown in blue) flows from the body into the right atrium. Dynamic Periodic Table.