Answer:
500-million-year-old fossil found in BC is ancient ancestor of spiders and scorpions. Palaeontologists in British Columbia have found a fossil of the oldest known ancestor of scorpions and spiders.
Answer:
commensalism
Explanation:
the barnacles benefit from the whale while the whale doesn't but the whale isn't harmed either
Red-flowered snapdragon have a homozygous genotype rr (both alleles are the same)
White-flowered snapdragon have a homozygous genotype r'r'
Gamet for the red-flowered snapdragon is r
Gamet for the white-flowered snapdragon is r'.
<span>F1 generation will have all heterozygous genotypes rr’.</span>
Which of the following statements describes
B. This zone measures from 600 to 3,000 feet below the surface, and is sometimes referred to as the “twilight zone” because of the amount of ambient light available.