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Black lead

Black lead

Plumbago; graphite.It leaves a blackish mark somewhat like lead. See graphite.


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Biology is not a science

... Animals can also do the same but they can't verbalize or make it in black and white. In biology, it clearly defined the basis for having life: ... I see here is that, studying further life in micro level will still lead us to the chemical nature. That the complexity of life is explained ...

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by mcar
Mon Jun 08, 2009 8:10 am
 
Forum: General Discussion
Topic: Biology is not a science
Replies: 44
Views: 1415

Brain size=IQ level theory (Blacks vs Whites & Asians)

... that all interracial comparisons were "invalid," "misleading," and "meaningless" because 14 crucial variables had ... mass averaged 1,392 g in 416 White men (SD = 130) and 1,286 g in 228 Black men (SD = 138), a difference of 106 g. Similarly, brain mass averaged ...

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by TJJ
Fri May 16, 2008 12:17 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 18
Views: 12533

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... Perinatal Study analyzed data from 17,000 White babies and 19,000 Black babies followed from birth to 7 years (Broman et al., 1987). Head perimeters ... these MRI studies were published in the late 1980s and early 1990s in leading, refereed, mainstream journals like Intelligence (Willerman et al., ...

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by TJJ
Fri May 16, 2008 12:13 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 18
Views: 12533

What your favorite endangered species.

... you said gray you're partly correct, they can also have white, red or black fur. Gray wolves are 2- 2.5 feet tall (shoulder height) and their bodies ... Reproductive Cycle: Gray wolves live in packs with 8 to 35 members. The leader of the pack is the alpha. Gray wolves, like maned and red wolves, ...

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by harrypotter101
Fri Oct 05, 2007 8:11 pm
 
Forum: Zoology Discussion
Topic: What your favorite endangered species.
Replies: 51
Views: 36000

adaptation and evolution: Haven't found the answer yet

... time in individuals, which are members of populations. These mutations lead to variation in the population. Look at our own species. There are tall ... will survive better than the lighter-coloured ones when resting on black tree trunks since they are harder to see by predators. So, the darker ...

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by wbla3335
Thu Apr 12, 2007 10:45 am
 
Forum: Genetics
Topic: adaptation and evolution: Haven't found the answer yet
Replies: 5
Views: 1193
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