Spiny animals - PowerPoint PPT Presentation

Name: hood Aatef Class:11-A-1

Name: hood Aatef Class:11-A-1. What is the lesson about? . Humans often make changes in food chains. Then they find that one change causes other changes. That was what happened when hunters killed nearly all the pacific sea otters . . What is the main idea? .

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374 views • 27 slides

Food chain in Sea

Food chain in Sea. Human often make changes in food chains. Then they find that one change causes other changes. That was what happened when hunters killed nearly all the Pacific sea otters. 1- What is the main idea of this text?. 2- How can human make changes in the food chain? .

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504 views • 25 slides

Echinodermata

Echinodermata. I. Phylum Echinodermata (“spiny skinned” animals). A. Characteristics. 1. First animals that are deuterostomates (blastopore develops into the anus). a. they are also the first to show indeterminant development and have radial cleavage.

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685 views • 18 slides

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