Biomes on earth have exhibited changes throughout history that have been caused by a variety of factors. over the past 50 years, the amount of tropical rainforest acreage found throughout the world has decreased from 14.8 billion acres to 8.6 billion acres due to deforestation. what factor is likely most responsible for the changes observed in the world’s rainforests? a. volcanic activity. b. human activity. c. temperature changes. d. solar eclipses.

b. human activity

Explanation:

A reduction of more than one third the total acreage of tropical forest in the world is not likely to be due to volcanic activity which is not so widespread in the present time. Temperature changes although important, are slow in their effects and are more likely to cause a change in forest cover rather than a dramatic loss. Solar eclipses are not known to cause deforestation. Human activity however, is known to cause important loss in forest acreage due to land use change, mainly to agricultural land.

i'd say that the moon rock is about 2.2 billion years old.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.