Answer:
correct answer is option D (Red Pine distribution will shift northward into Canada)
Explanation:
Forest tree species are expected to endure significant population changes
in response to warmer temperatures across the United States.Red pine forests are negatively impacted by extreme summer heat, especially those
that have not been thinned. Red Pine species can be adapted to a wider range of climate, several subtropical and tropical pines, have a high degree of genetic variation and tolerate a wide range of climates. Performance in multi-site provenance trials shows that they are adapted well to a wide range of climates Thus they may also be able to adapt to new climatic conditions in their natural habitat.
Their are other factors which also influence red pine occurrence like soil conditions, plant competition. These factors are likely to be additional constraints for the present species distribution and future distribution shifts.
From these factors it is found that Red pine distribution will shift northward into Canada over the next 200 years.
The picture of the prove is necessary!
Answer:
Commodity dependence makes countries more vulnerable to negative economic shocks,” said UNCTAD's commodities head, Janvier Nkurunziza. “It can have a negative impact on export and fiscal revenues and adversely affect a country's economic development.
Explanation:
Caribbean Sea and Mexico<span> form part of the borders of almost all Central American countries .
So it's A the right answer</span>
Answer:
1)
Opportunity Cost; when you make a choice, you lost the opportunity to choose other things
Explanation:
AS we know that natural resources are limited and we have to use these sources in proper well planned manner.Because natural sources are decreasing day by day due to more consumption.
Three principle of natural resources management are
1.Sovereignty
2.Scarcity
3.Efficiency
So the option option 1 is correct.
1)
Opportunity Cost; when you make a choice, you lost the opportunity to choose other things
