Why do big baleen whales, such as the blue whale, eat small creatures such as krill?
a) krill are highly abundant because they are near the bottom of the food web, so there is more biomass to support large animals
b) they are so large and heavy that they cannot swim fast enough to catch larger prey
c) baleen whales feed on the ocean floor, where krill live in the sediment
d) krill contain critical nutrients that the big whales need to survive
e) Only big baleen whales are fast enough to catch krill in large numbers
Question 2
What do we call the huge rotating masses of low pressure characterized by strong winds and torrential rains that are the largest storm systems on Earth?
a) Hurricanes in North and South America
b) Typhoons in the Western Pacific
c) Cyclones in the Indian Ocean
d) A, B, and C
e) The El Nino Southern Oscillation
Unique markings identify individual humpback whales.
Cultured HeLa cells have been stained with Hoechst turning their nuclei blue
An adult male killer whale with its characteristic tall dorsal fin swims in the waters near Tysfjord
Adult blue whale from the eastern Pacific Ocean
he Blue-cheeked Bee-eater, Merops persicus, is a near passerine bird in the bee-eater family, Meropi
Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones