Read the selection from the section "Why Are Nutrient Cycles Important?"
When human population levels were
low and technology simple, the effect
on the biosphere was relatively small.
Increasing human popula. on levels
and harvesting of Earth's natural
resources has transformed this
situation, especially in recent decades.
Which word from the selection helps the reader
understand that humans have removed matter from
the biosphere?

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

i need an image of the diagram

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.