The gypsy moth is now one of the most challenging insect pest species in north america. with hundreds of known plant hosts, many of which are completely defoliated during outbreak years, the gypsy moth has no shortage of food and defoliation lasting two or more years can cause significant tree mortality. today this introduced species is considered an invasive species. the gypsy moth became established in the u. s. for all but one of the following reasons. a) female gypsy moth egg masses may contain over 1,000 eggs. b) females cannot fly so it may take longer for the species to reach surrounding areas and flourish. c) the caterpillars that hatch from eggs are capable of feeding on over 300 species of trees and shrubs. d) predators, parasitoids, and diseases that would feed on the egg masses in its native habitat are not present.
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Biology, 21.06.2019 19:00
Study the image of this rock.which characteristic best supports its formation from sedimentary processes? it has many layers.it is coarse-grained.its grain shape is round.its texture is non-banded.
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Biology, 22.06.2019 05:50
The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
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Biology, 22.06.2019 07:20
Agroup of plant cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. if the mitochondria were unharmed, what would happen to the overall function of the plant cells? a. the cells would not be able to make food, but would be able to release energy from biomolecules. b. the cells would not be able to replicate dna, but would be able to break down waste. c. the cells would not be able to break down waste, but would be able to replicate dna. d. the cells would not be able to release energy from biomolecules, but would be able to make food.
Answers: 1
Biology, 22.06.2019 07:50
Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?
Answers: 1
The gypsy moth is now one of the most challenging insect pest species in north america. with hundred...
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