subject
English, 29.10.2019 23:31 skdkdksks

In asia, where palm trees are non-native, the trees’ flowers have traditionally been pollinated by hand, which has kept palm fruit productivity unnaturally low. when weevils known to be efficient pollinators of palm flowers were introduced into asia in 1980, palm fruit productivity increased—by up to 50 percent in some areas—but then decreased sharply in 1984.which of the following statements, if true, would best explain the 1984 decrease in productivity? (a) prices for palm fruit fell between 1980 and 1984 following the rise in production and a concurrent fall in demand.(b) imported trees are often more productive than native trees because the imported ones have left behind their pests and diseases in their native lands.(c) rapid increases in productivity tend to deplete trees of nutrients needed for the development of the 'fruit producing female flowers.(d) the weevil population in asia remained at approximately the same level between 1980 and 1984.(e) prior to 1980 another species of insect pollinated the asian palm trees, but not as efficiently as the species of weevil that was introduced in 1980.

ansver
Answers: 3

Another question on English

question
English, 21.06.2019 21:30
Recommend four ways in which a person should approach conflict resolution in order to sustain healthy relationships
Answers: 2
question
English, 21.06.2019 22:00
Arrange the sentences below to form a logical paragraph.an experienced rock climber knows that it takes a combination of knowledge and preparation to perform a successful climb.a successful climb begins with a proper foothold, carefully placing each foot on a ledge or crack then reaching for a solid hold, and finally pushing off.in addition to a proper foothold, a climber must be careful to check the integrity of the rock before stepping because it has to be solid clear through.a veteran climber judges the integrity of the rock and chooses not to climb on conglomerates, packed clay with lots of little rocks.but, such knowledge of rock is not the only preparation a skilled climber needs; equally important is the correct equipment.with these tools, knowledge of rock composition and equipment safety, a climber may experience many safe and enjoyable climbs.
Answers: 3
question
English, 22.06.2019 02:40
Which two shifts occur at the end of franz kafkas the metamorphosis
Answers: 1
question
English, 22.06.2019 05:30
Compare and contrast spoon river anthology
Answers: 3
You know the right answer?
In asia, where palm trees are non-native, the trees’ flowers have traditionally been pollinated by h...
Questions
question
Social Studies, 13.10.2019 12:00
question
History, 13.10.2019 12:00
Questions on the website: 13722367