Who wrote the book, Silent Spring?

Soil in tropical rainforest is nutrient deficient as a result of:

Epiphytes are usually seen in 

Which of the following are found almost exclusively in the American continent?

Name the organ which frogs use for breathing while in water.

Plants that live on other plants and absorb the water through hair on their leaves are:

Most coniferous trees have:

An example of a plant that live at the bottom of a water body.

Which biome represents a third of earth’s land?

Deciduous trees are usually seen in