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Anonymous users2024-02-13Trees are planted in early spring. Green my home. Wait until ten years later. The mountains are lush and green.
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Anonymous users2024-02-12Animals can take advantage of resources in a variety of habitats, such as the Arctic with long summer sunshine and abundant food, where many wading birds and other birds breed, but in winter, they have to migrate long distances south. If environmental resources are unpredictable, animals often adapt to this situation by moving irregularly.
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Anonymous users2024-02-11Solution: Let the annual growth rate be x
400+400(1+x)+400(1+x)²=1324100x²+300x-31=0
10x-1)(10x-31)=0
x1=10%;x2=rounded).
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Anonymous users2024-02-101324=400*(1+x%) squared, find x is the result.
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Anonymous users2024-02-09Let the annual growth rate be x, there is.
400+400*（1+x%）+400*(1+x)^2=1324
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Anonymous users2024-02-08There are two reasons: 1. In autumn, the animals migrate. 2. The environment is harsh and can no longer survive.
Both of the above reasons are possible.
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Anonymous users2024-02-07There are also swans and geese waiting for migratory birds, because the weather is getting colder and the birds can't adapt so they leave their homes and fly south (I'm a primary school student) but the crested cranes are not migratory birds.
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Anonymous users2024-02-06I think it's climate change and the need to migrate. Because in the winter they will freeze to death.
I didn't come back until winter.
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Anonymous users2024-02-05Suppose the percentage of annual growth is x
Then 400 + 400 (1 + x) + 400 (1 + x) 2 = 1324100 + 100 + 100x + 100 + 200x + 100x 2-331 = 0100x 2 + 300x-31 = 0
x=or x=rounded).
So the average percentage of annual growth is 10%.
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Anonymous users2024-02-04The total number is already known, and the number of years is also known, just divide 1324 by 3, and the answer is 441
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Anonymous users2024-02-03The concept is broad, the reason why animals leave their "homes". See how you understand the homeland. Home should be a suitable place for survival and warmth, so in this way, the reason why animals leave their homes is only two points, first, forced, and second, there is more suitable, more warm, and survival than this.
However, at present, the latter is still the majority of the population, such as migratory birds flying south, Tibetan antelopes, zebras and so on. Another example is in a narrow sense, the cicada just began to live underground, in the dark, by eating tree roots, once it grows wings, it flies to the sky, which is also the so-called home departure, or the turtle king eight eggs on the beach, but eventually swim into the water.
As for the current environment, there are some animals that are forced to leave their homes, and can only find their homes again, such as tigers, wild boars and other animals, due to human intervention, the environment in which they are usually no longer able to meet the needs of survival, and there is no way to leave.
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Anonymous users2024-02-02Lalabu wombat, go grab his problem!!
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Anonymous users2024-02-01In order to find food, there are also natural predators.
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Anonymous users2024-01-3128 (1-80%)=140 (pieces).
140-28=112 (pcs).
A: 140 plants and 112 animals.
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Anonymous users2024-01-30Talented. How do you run here to ask elementary school calculation questions?
There are 28 fewer animals than plants, 1-80% less = 20%.
Thus, 28 accounted for 20% of the number of plant specimens
Plants – 28 (1-80%) = 140
Animals – 140-28 = 112
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