Question

What's More Activity 6 Directions: Write the division and period of the listed organism below. Refer to geological time scale. Era Period 1. first vascular land plants 2. jawed fish diversity 3. evolution of humans 4. first chordates 5. mammals diversify 6. first primates 7. dinosaurs' diversity 8. major extinctions of reptiles' diversity 9. sudden diversification of metazoan families 10. first flowering plants​

Answer 1

Directions: Write the division and period of the listed organism below. Refer to geological time scale. Era Period 1. first vascular land plants 2. jawed fish diversity 3. evolution of humans 4. first chordates 5. mammals diversify 6. first primates 7. dinosaurs' diversity 8. major extinctions of reptiles' diversity 9. sudden diversification of metazoan families 10. first flowering plants Directions. Complete the crossword by filling in the word that describes each clue. Across Down 2. with two symmetrical shells - 1. exoskeletons are made up of this mirror images of each other material 3. the term "crinoid" means 4. lived inside their shells 5. rock type made of layers of sand 6. phylum where starfish and sea and clay urchins belong 7. multicellular organisms that 8. individuality of coral is called often live in colonies What I Have Learned Fill in the blanks. Read and analyze the statements below. Write the word that will complete the sentence/paragraph. are the remains or evidence of prehistoric plants and animals that have fossilized. 2. Fossils were used as markers when building up the geologic time scale. The names of most of the eons and eras end in "zoie" because these time periods were recognized by the _present at the time. 3. The geologic time scale is the calendar" for events in Earth's history. It subdivides all time since the end of the Earth's formative period as a planet (nearly 4 billion years ago) into named units of abstract time in descending order of duration, which are and 1. 4. The _provides a system of chronologic measurement relating stratigraphy to time that is used by geologists, paleontologists and other Earth scientists to describe the timing and relationships between events that have occurred during the history of the Earth. 5. The Geologic Time Scale is divided into huge blocks of time called eras. Eras are defined by major changes in the fossils found in the rock layers that were formed during those time spans.

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