Which of the following is not true concerning rainforests?
a.
twenty-five percent of western pharmaceuticals are derived from rainforest ingredients.
b.
almost 50,000 rainforest species are lost every year due to deforestation.
c.
half of all rainforest plants have been tested for their medicinal properties.
d.
projections say rainforest deforestation could eliminate half of the world’s species.

Half of all rainforest plants have been tested for their medicinal properties is not true concerning rainforests.

Further Explanation:

The rain forest provides habitat to a number of plants, for example, Amazon forest which includes over 40-41000 plant species, covering north-western, Brazil, Peru, and other South American countries, extending into Colombia, the climate is hot and humid which provide the ideal condition for plant to grow. Some example of rain forest plant is epiphytes, bromeliad, and orchids.

Advantages of rain forest;

Over 138 kinds of living forms are driven into demolition every day in the world’s tropical rainforests. The forces of damage such as deforestation contributed to the loss of acres of land of tropical rainforest. Animals lose their shelter when deforestation has done Varieties of rain forest plants are used to treat disease and use in pharmaceutical companies to make medicine about 25-30 percent of medicinal drugs are made by rainforest plants. The two-third part of the medicine of all medicines obtains from rainforest plant. Most of the medicine has fighting properties with cancer.

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Answer Details:

Grade: High School  

Subject: Biology

Chapter: Ecology

Keywords:

Rain, forest, north-western, brazil, plant, Amazon forest, bromeliad, orchids, epiphytes, climates, deforestation, pharmaceuticals, damage, animal, medicine, damage, stable, Colombia, South America.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.