There was, however, evidence of a significant interaction between the volunteer and nitrogen treatments (especially for per cent plants with moderate symptoms; P = 0.02).
The occasion for the festivities was the launch of a new White Castle menu item: sliders made by Impossible Foods, the Silicon Valley startup, founded by a Stanford biochemist, which has developed a hundred-per-cent plant-based hamburger substitute that mimics the molecular structure of beef, even approximating the way a real burger "bleeds".
If global average temperatures rise between 1.5C and 2.5C, then "approximately 20 to 30 per cent of plant and animal species assessed so far are likely to be at increased risk of extinction".
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2In our sample, 4.3 per cent of plants report "no pressure from competition at all", 11.1 per cent "minor pressure from competition", 38.5 per cent "medium pressure from competition", and 46.1 per cent "substantial pressure from competition", where we take the latter category as an indicator of strong competition in the plant's product market.
The observations in 2001 suggest that Manduca and other moths would visit only a fraction of one per cent of plants, and this percentage probably better represents the outcrossing rate within most N. attenuata populations.
Per cent inhibition of plant extracts was calculated by comparing the amount of radioactivity present in the sample with that in the solvent blank.
In 1933, hybrid corn amounted to about one half of one per cent of the planted corn acreage in the United States.
Nigel Tucker, a restoration ecologist in Australia, has recommended that ten per cent of new plants in tropical-reforestation projects be fig seedlings.
There was significantly more R. hawaiiensis and C. trigynum seeds dispersed (relative to per cent cover of each plant species) at sites with Omao (R. hawaiensis: t = 7.7; df = 3; P = 0.004; C. trigynum: t = 3.5; df = 3; P = 0.04; Fig. 1).
By its fifth year, the disease had reached forty-five million treightyighty per cent of everything ever planted.
