are the colonies of the organism streaked in this question pigmented? is the pigment soluble or non soluble

The energy needs of a human population are not affected by

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.