The correct answer for the question that is being presented above is this one: "oxygen became available from cyanobacteria." About 1.2 billion years ago, eukaryotic and multicelled organisms evolved because oxygen became available from cyanobacteria.
Physical geography is the branch of geography dealing with the natural features and the processes
Oaks and many other trees are monoecious.
It refers to both when the male and girl reproductive organs are gift within the identical organisms or vegetation. Dioecious plant life. it is stated whilst the male and lady reproductive organs are distinct, this means that they're present in two separate organisms or plants.
Vegetation that have both woman and male sexual organs on the equal plant are known as monoecious plants. those male and woman parts can be placed at unique locations at the plant. instance: Cucurbita, Chara, and Coconut.
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A shaded relief map uses different colors to represent elevation. The correct option among all the options given in the question is option "C". The shaded relief map is actually used to show the various high and low elevations of an area.It actually shows mountains and plains in different colors for people to understand.
