Peacocks, Parasites And The Puzzle Of Sex
Free to track · join viewers tracking what they watch on Moventra
줄거리
What's the purpose of sex? To protect us from disease! Brian Leith unravels the intricate puzzle of sex and finds that: Males seem to be a waste of time and energy - many of the successful plants and animals (like the weeds in your garden) do without them altogether! Big animals - from polar bears to human beings - always have males as well as females - for a very good reason! The vital clue to the mystery lies in parasitism and infection. Out of the puzzle emerges a sparkling new theory of sex that looks set to keep biologists buzzing for years.
출연진
S03E01
50 분
Among The Wild Chimpanzees
4 11월 1984
S03E02
50 분
One Man's Island
11 11월 1984
S03E03
50 분
Invaders Of The Truk Lagoon
18 11월 1984
S03E04
50 분
The Desire Of The Moth
25 11월 1984
S03E05
50 분
A Question Of Space
2 12월 1984
S03E06
50 분
Peacocks, Parasites And The Puzzle Of Sex
9 12월 1984
S03E07
50 분
Land Of Ice And Fire
16 12월 1984
S03E08
50 분
The Lost World Of Medusa
23 12월 1984
S03E09
50 분
Kinabalu - Summit Of Borneo
6 1월 1985
S03E10
50 분
Wild Ireland
13 1월 1985
S03E11
50 분
Water - A Fresh Look
20 1월 1985
S03E12
50 분
Battle Of The Leaves
27 1월 1985
S03E13
50 분
The Year Of The Rat
3 2월 1985
S03E14
50 분
Through Animal Eyes
10 2월 1985
S03E15
50 분
Within A Garden Wall
17 2월 1985
Your free movie & series tracker
What is Moventra?
Moventra is a free tracker for everything you watch. Build a watchlist, follow your episode progress, and get pointed towards your next favourite.
Watchlist
Save movies and series you want to watch later.
Episode tracking
Keep tabs on every season and episode as you watch.
Recommendations
Find similar titles when something isn’t for you.
Import & export
Bring your list with you and keep control of your data.
Frequently asked questions
How do I keep track of Natural World?
Will Moventra remind me about Natural World?
What else can I watch after Natural World?
Does Moventra cost anything?
One place for every film and series you love, starting with Natural World.
Free forever, no advertisement. Pick up where you left off and always know what’s next.