The answer is <span>insect and pest populations decreased.
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DDT (dichlorodiphenyltrichloroethane) was used as an insecticide which is a substance used to kill insects. That resulted in decrease in insect and pest populations. It is a persistent and non-degradable insecticide, but as well organic pollutant readily accumulated to soils and consequently affects organisms.
The correct answer is false. Hope this helps!
Answer:
D.
Explanation:
The scientific method is a way of doing science that helps answer questions. It also helps to obtain new knowledge.
Answer: <u>Student 3</u>
Explanation:
Mammals are a type of animal which are classified through several factors.
- these vertebrates posses
- hair or fur
- three bones in the middle ear
- a brain region for higher-order brain function, the neocortex
- nurse their young with milk from mammary glands
Whales are fully aquatic mammals, with specialized adaptations to thrive in their environment. These adaptations, like blubber, allow these mammals to maintain their body temperatures in cold environments. They are part of the order that includes their closest relatives as even-toed, hoofed land dwelling mammals called Cetartiodactyla, as a suborder, Cetaceans. Balaenoptera is a genus of whales with around eight distinct species, including the fin whale and minke whale.
Answer:
Reading graphs: The variable plotted on the x-axis is year while the two variables plotted on y-axis are both wolves and moose.
Interpreting variables: The population of moose rose from 800 to 1550 between 1965-1972 while the population of wolves rose from 24 to 43 between 1973-1976.
inferring: The change in population of moose might cause a change in wolves population as a result of the feeding pattern of wolves, perhaps the contest between them was affected by availability of another prey which allows the predator (wolves) to feed on another prey, hence increasing the population of moose.
Conclusion: The dip in population of moose between 1974 and 1981 could be attributed to voracious feeding pattern the predator (wolves) had on the prey (moose) which inturns allows the dip in population during the above mentioned years.
Predicting: If there is a disease infection in wolves, then there would be an increase in the population of moose the next year as a result of disruption in the predator-prey contest, hence; allows one to be more populated the following year.
Explanation:
From the above assertions, it could be deduced that only when the feeding pattern of the predator (wolves) changes then the population of the prey would either be reduced or increased.