Answer:
d. the Sahara desert forms a cultural barrier in Africa
Explanation:
The vast Sahara certainly plays the role of a cultural barrier, blocking the North-South exchanges on that huge continent.
a. apartheid is the official policy of Africa
: today? False, that ended in 1994.
b. Europe controls most of African nations today. No, at least not politically. China is a bigger player in Africa now than most European countries with massive investments. Most European colonies got their independence 50-60 years ago.
c. Africa is governed by the IMF IMF is an economic institution, it doesn't control or rule any country.
The National Highways Authority of India (NHAI) is responsible for the development, maintenance and management of National Highways in the country.
Answer:
a) Yes! the American chestnut tree is a native species. The American chestnut tree was present before the Europeans arrived in North America in the 1600s. Since a native species has been defined as any species that was present in North America before the arrival of the Europeans, then it is a fact that the North American chestnut tree is a native species.
b) The chestnut blight is an invasive species that is native to east East Asia, and was accidentally introduced into North America around the early 1900s, when the Japanese chestnut was commercially cultivated in the United States.
c) Invasive species tend to proliferate at a very high rate because they lack some natural constraints in the new environment such as natural predators, competition, and as in the case of this chestnut blight; the host has no natural defense mechanism against them. These conditions allow them thrive more than they would in their natural environment, unchecked
d) Yes, I agree with this idea, albeit to some extent. The development of hybrid chestnut resistant to the chestnut blight will possibly return the forests back to how it was before the Europeans arrived in the 1600s, but the genetic conservation will be altered, since these new trees will be an hybrid of the old trees, and the forest won't truly be as it was before the 1600s
Answer:
Based on its mass, the sun's gravitational attraction to the Earth is more than 177 times greater than that of the moon to the Earth. ... However, the sun is 390 times further from the Earth than is the moon. Thus, its tide-generating force is reduced by 3903, or about 59 million times less than the moon.
Explanation:
Hope this helps:)
D
well geo- geographical means earth
thearmal means heat
