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1.Miss Chariyaporn Puwichak No. 533410090206 2.Miss Pennapa Duanglee No. 533410090221 3.Miss Hathairat Phommachat No. 533410090244 4.Mr. Sukhum Petpa No. 533410090248 ค.บ. วิทยาศาสตร์ หมู่ที่ 2

Hi ! Everyone.

สวัสดีทุกๆคนค่ะ/ครับ

How's it going?

คุณสบายดีไหม?

Today. I'm going to talk about food web.

วันนี้ครูจะมาพูดเกี่ยวกับ สายใยอาหาร

Did you do the homework on the vocabulary?

นักเรียนทำการบ้านคำศัพท์ที่ครูให้แล้วหรือยัง

You did! Great. Let's review.

ดีมาก!! เราลองมาทบทวนกัน!!

food

อาหาร

description

ลักษณะ

discovering

การค้นพบ

relationships

สัมพันธ์

among

ระหว่าง

might

กำลัง

through

เสร็จสิ้น

result

ผลลัพธ์

dependent

ขึ้นอยู่กับ

still

ยังคง,เหมือนเดิม

OK very good.

ดีมาก คะ

Now that we've gotten that out of our way, let's begin today's lesson.

ตอนนี้เราจะเริ่มนำเข้าสู่บทเรียนกันนะคะ

Are you ready.

คุณพร้อมหรือยัง

OK. Let's Go.

ตกลง งั้นเริ่มกันเลยค่ะ

Food web

สายใยอาหาร

Food chains are rarely simple linear progressions from one trophic level to the next.

...

Instead, a single species, such as a hawk, might be a second-order consumer of field mice, a third-order consumer of frogs, and a fourth-order consumer of owls.

...

This is a survival strategy for the hawk, so it doesnot become too dependent on one species.

...

It also creates complex interrelationships between species, and a food web is the result.

...

In most food webs, the relationships are so intricate that ecologists are still discovering the ways that these dynamic networks work.

...

A change in one species will affect the species that prey on it, but it can also trigger unexpected consequences in species with no direct link in the web.

...

In a pond ecology, for example:

...

1.Aquatic invertebrates and minnow eat algae

...

2.Minnows and perch eat aquatic invertebrates

...

3.Perch and bass eat minnows

...

4.Great Blue Herons and bass eat perch

...

5.Great Blue herons eat perch.

...

Do you have a question?

คุณมีคำถามไหม?

Do you understand?

คุณเข้าใจไหม?

Thank you very much for your attention.

ขอบคุณมากค่ะ ที่รับฟัง

Thank you so much.

ขอบคุณมากค่ะ

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