Index Fossil

What makes a good index fossil ? 
You may find this video helpful. 
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Geological Time

 What was used to help establish geological time? 

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Thanks for taking the time for science. 

What we have learned so far.

 We have been working on Evolution for the past few weeks. Today just post a comment about something you now know about evolution. 

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Check out this video :
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The same on the inside.

 A porpoise flipper, a bat wing, a frog arm and a human arm, have structures inside that are similar.

These parts that are similar in structure and origin are known as what? 
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We all have things in common

 A tail, gills, or gill slits are found in fish, reptiles, birds, and mammals. At what stage in life do these organisms have these traits in common? 

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optional video

Fossils are evidence evolution.

 There are many types of fossils, these are all clues for evolution. Please leave a comment naming one of these types of fossils.  

Clues for Evolution

 Evolution has evidence that supports the theory. What are some of the clues that support the theory of evolution? Please comment with one example of clue for evolution. 

Fill in the blank Evolution

 Hello, for today read the sentence below and post what words you think would best go with each number. 

Charles (1) sailed on a ship called the (2). The ship set sail in the year (3). He found many interesting animals and plants on the (4) islands. 
He came up with the idea that evolution happened through the process of (5).

Last Day of Javelina week 2021

 There are three conditions need for natural selection to occur. The three conditions are variation,fitness, and inheritability. Differences must be present, those differences must help the species survive, and the differences can be passed onto offspring. Look at the picture below what is the evidence for natural selection? 

How fit is your Javelina?

 One of the three conditions that must be met for natural selection is a difference in fitness. The different traits must help the individual organism survive and reproduce. How did a different trait help the cactus survive and reproduce? What evidence is in the picture to show the cactus is reproducing? 

Javelina Week Continues

 There are three conditions that must be met for natural selection to occur. The first is there must be variation in characteristics. Different individual in a population must have different traits. What was the different trait that the surviving cactus had?  

More with Javelinas

 Why is the javelina not eating one of the cactus? What happens to the cactus the javelina is eating by picture four? 

Javelina

 What do you think is happening in the image below? 

What differences do you see between pictures 1 and 2? 

Video Link about the Javelina

Evolution and Emojis

 Evolution shows the change in traits that are passed down from one generation of an organism to the next. Watch  this video by Bill Nye that explains evolution through emojis. 

Question: What is the key according to the video that makes evolution possible 

Change over time

 Evolution is the change in inherited characteristics over time. Today think about technology that has changed over time. Give an example of something that humans use that has changed over time.