Match the following.
(1) (ha) a unit of measure equal to 2.5 acres or 10,000 square meters
(2) reduced ability of the soil to support life
(3) a small tropical tree that grows in wetlands near salt water
(4) the development of higher than normal salt content in the soil
(a) land degradation
(b) hectare
(c) mangrove
(d) salinization

Hich of the following best summarizes the text’s depiction of the ancient indus valley cities (namely harappa and mohenjo-daro)? a. the cities were very plain and simple; the people did not focus on art and architecture, devoting their time instead to agriculture and the bare essentials. b. the cities were adorned, or decorated, with almost overwhelming displays of wealth and artistic architecture. c. the cities were extremely clean, relying on an advanced water and sewer system, though this was mainly constructed for the innermost areas of the cities. d. the cities were clean and peaceful, and they were designed in an extremely organized fashion, using an advanced water and sewer system to keep them this way

What is the border between layers a through f and layer g called?

James hutton is ? a. extensively studied fossils. b. revealed that fossils would provide the history of past life. c. created the first scientific classification of plants and animals. d. provided geologic evidence necessary for calculating the time span of evolution.