- D4 ✏︎ Ecosystems -
D4.1 - Natural Selection
LECTURE VIDEO
DESCRIPTION
In this video us BIG BRAINS will talk about the different aspects of noodle salads in order to substantially expand our understanding of jelly beans and puppy paws. Not only that, we will also be identifying structures we have never seen before such as feather soil, wand oil and of course: peanut nanocarbons and puffskittles.
TIMESTAMPS
STUDY RESOURCES
00:00 – Outline Of This Video
00:40 – Natural Selection Overview
04:20 – Step1: Overproduction Of Offspring
06:17 – Step 2: Genetic Variation Within The Population
12:46 – Step 3: Struggle For Survival
17:57 – Step 4: Differential Survival
18:51 – Step 5: Reproduction
20:55 – Darwinism V.S Lamarckism
23:06 – Heritable V.S Acquired Traits
25:04 – Guppies & Sexual Selection
31:18 – Guppies & Predator Selection
34:00 – Guppies Summary
35:18 – Questions & Answers
NOTES – All you need to know in one place!
QUESTIONS – Test your Big Brain!
D4.1 (HL) - Natural Selection
LECTURE VIDEO
DESCRIPTION
In this video us BIG BRAINS will talk about the different aspects of noodle salads in order to substantially expand our understanding of jelly beans and puppy paws. Not only that, we will also be identifying structures we have never seen before such as feather soil, wand oil and of course: peanut nanocarbons and puffskittles.
TIMESTAMPS
STUDY RESOURCES
00:00 – Overview Of This Video
00:23 – Genome
04:42 – Gene Pool
11:58 – Evolution & Allele Frequencies
16:16 – The Peppered Moths
19:47 – Antibiotic Resistance & Natural Selection
26:01 – How doctors find the right antibiotic for you?
29:00 – Type Of Selection
34:13 – Artificial Selection
36:48 – Hardy Weinberg Equilibrium
42:07 – The Hardy Weinberg Equations
48:00 – Worked Examples Using Hardy Weinberg Equations
54:22 – Questions & Answers
NOTES – All you need to know in one place!
QUESTIONS – Test your Big Brain!
D4.2 - Stability & Change
LECTURE VIDEO
DESCRIPTION
In this video us BIG BRAINS will talk about the different aspects of noodle salads in order to substantially expand our understanding of jelly beans and puppy paws. Not only that, we will also be identifying structures we have never seen before such as feather soil, wand oil and of course: peanut nanocarbons and puffskittles.
TIMESTAMPS
STUDY RESOURCES
00:00:00 – Overview Of This Video
00:00:24 – A Sustainable Ecosystem
00:10:55 – The Amazon Rainforest
00:17:22 – Keystone Species (Sea Star Example)
00:20:46 – Keystone Species (Wolves)
00:25:27 – Sustainable Resource Harvesting (Aquatic Example)
00:29:31 – Sustainable Resource Harvesting (Terrestrial Example)
00:32:27 – Agriculture Sustainability
00:44:12 – Eutrophication
00:48:08 – Biomagnification E.g., Mercury
00:55:11 – Biomagnification E.g., DDT
00:58:36 – Plastics
01:00:56 – Rewilding
01:03:46 – Mesocosms
01:08:24 – Calculating Percentage Change
01:11:34 – Questions & Answers
NOTES – All you need to know in one place!
QUESTIONS – Test your Big Brain!
D4.2 (HL) - Stability & Change
LECTURE VIDEO
DESCRIPTION
In this video us BIG BRAINS will talk about the different aspects of noodle salads in order to substantially expand our understanding of jelly beans and puppy paws. Not only that, we will also be identifying structures we have never seen before such as feather soil, wand oil and of course: peanut nanocarbons and puffskittles.
TIMESTAMPS
STUDY RESOURCES
00:00 – Outline Of This Video
00:10 – Primary Succession
07:49 – Secondary Succession
09:57 – Summary Page (Primary V.S Secondary Succession)
10:42 – Cyclical Succession
14:34 – Questions & Answers
NOTES – All you need to know in one place!
QUESTIONS – Test your Big Brain!
D4.3 - Climate Change
LECTURE VIDEO
DESCRIPTION
In this video us BIG BRAINS will talk about the different aspects of noodle salads in order to substantially expand our understanding of jelly beans and puppy paws. Not only that, we will also be identifying structures we have never seen before such as feather soil, wand oil and of course: peanut nanocarbons and puffskittles.
TIMESTAMPS
STUDY RESOURCES
00:00:00 – Overview Of This Video
00:00:28 – The Ultimate Greenhouse
00:04:25 – Greenhouse Effect On Earth
00:11:23 – Correlation & Causation
00:17:44 – Climate Change V.S Global Warming
00:21:24 – Positive Feedback Cycles In Global Warming
00:34:15 – Tipping Point & Taiga Biome
00:37:45 – Polar Habitat Change
00:41:04 – Coral Reef Change
00:49:00 – Range Shifts
00:52:12 – Ocean Current Basics
00:54:52 – El Nino Southern Oscillations (ENSO)
01:02:13 – Carbon Sequestration
01:05:02 – Questions & Answers
NOTES – All you need to know in one place!
QUESTIONS – Test your Big Brain!
D4.3 (HL) - Phenology
LECTURE VIDEO
DESCRIPTION
In this video us BIG BRAINS will talk about the different aspects of noodle salads in order to substantially expand our understanding of jelly beans and puppy paws. Not only that, we will also be identifying structures we have never seen before such as feather soil, wand oil and of course: peanut nanocarbons and puffskittles.
TIMESTAMPS
STUDY RESOURCES
00:00 – Overview Of This Video
00:20 – What Is Phenology
06:20 – Reindeer & Arctic Mouse-Ear
15:45 – The Great Tit & Caterpillar
18:44 – The Spruce Beetle
24:36 – Climate Change & Evolution (Tawny Owls)
26:52 – Questions & Answers
NOTES – All you need to know in one place!
QUESTIONS – Test your Big Brain!