What is the primary cause for species extinction today?
pollution
habitat destructi...
Geography, 05.11.2019 14:31 minnahelhoor
What is the primary cause for species extinction today?
pollution
habitat destruction
invasive species
excessive hunting
Answers: 3
Geography, 22.06.2019 10:30
The red square is a famous historical site that is located in
Answers: 1
Geography, 22.06.2019 18:00
Which of the following is defined as combinations of soil particles that vary in size and shape?
Answers: 3
Geography, 23.06.2019 20:00
Scientist: cross-sections of stalactitesâcalcite formations deposited on cave ceilings by seeping waterâcan reveal annual variations in rainfall in particular areas over hundreds and thousands of years. we often found that whenâaccording to these cross-sectionsâdrought occurred in a particular area, it coincided with the collapse of an ancient society in that area. i hypothesize that drought reduced agricultural productivity in these areas, thereby leaving these societies without the resources needed to handle internal stresses and external threats. which of the following, if true, would most weaken the support for the scientist's hypothesis? a. many droughts indicated in the cross-sections of stalactites do not correspond with the collapse of a society in that area. b. information from the cross-sections of stalactites alone cannot reveal the level of agricultural output in an area at a particular time. c. most of the societies that collapsed during droughts did so when internal power struggles coincided with military raids from neighboring societies. d. most of the societies that collapsed during droughts maintained large stockpiles of food and water at the time of their collapse. e. information from stalactites also suggests that the collapse of some societies coincided with periods of abnormally high rainfall.
Answers: 1
Geography, 23.06.2019 23:40
Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes.b. it burns more cleanly than crude oil products.c. scientists have developed new ways of extracting it.d. during its extraction, groundwater can be contaminated.
Answers: 2
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