Can you help for my presentation / myLot

India

July 12, 2016 7:06am CST

Hi guys, Being somewhat busy these could not participate in mylot. I am here with a need now, need some good lines for my presentation. I need some help from you friends. Topic is "Periodical Extinctions" Hoping for the best from mylot

4 people like this

4 responses

DianneN

@DianneN (247184)

• United States

16 Apr 20

I’m not sure how to help other than use search engines.

1 person likes this

Valerie J. Routhieaux

@just4him (318343)

• Green Bay, Wisconsin

13 Apr 20

I find personal research is always best. I wouldn't know how to go about giving you information on that topic.

1 person likes this

Cristy

@magallon (19279)

• Philippines

12 Jul 16

Is it periodical extinction or periodic extinction? If it is about periodic extinction, there is what we call periodic mass extinction which occurs every million years. You can read a lot of it when you search for the topic.

Bluedoll

@Bluedoll (16773)

• Canada

30 Aug 17

Thanks for the definition as I thought it might mean absense of periods Interesting topic but how can that be proven I wonder since a million years is long time A presentation idea could be to drop a large rock that goes boom and then leave the room? Question marks are not yet extinct

Yogesh Sharma

@ModernDayWriter (3318)

• New Delhi, India

12 Jul 16

What is periodical extinctions?