1.Plants are producers of vast quantities of food and oxygen.
2.In the early history of the earth, land was a harsh, forbidding environment.
3.The first land plants that evolved from aquatic green algae were in danger of drying out, because water was not immediately available as it was to algae that lived in water.
4.The two main kinds of seed-bearing plants are gymnosperms and angiosperms.
5.A gymnosperm seed is "naked" because it lacks a protective fruit covering.
6.Unlike most gymnosperms, ginkgoes are deciduous, this means that the leaves are shed each year.
7.In a few years this tree will be more than fifteen metres in height.
8.Although the tree's roots were not very strong already, they could still support the trunk.
9.The flower is the organ that helps ensure the successful reproduction of flowering plants.
10.The odour and colourful petals of this flower will be two important factors for a good sale next spring.
11.Ferns are restricted to habitats that were wet for at least part of the growing season.
Объяснение:
3.9.Задайте различные типы вопросов к предложениям:
6.Most large woody plants, as well as fleshy fruit and vegetables, are dicots.
Fleshly fruit and vegetables are dicots, arent they?
What kind of plants are fleshy fruit and vegetables?
7.The ginkgo is a tall tree with unusual fan-shaped leaves.
What is a ginko?
A ginkgo is a tall tree with unusal fan-shaped leaves,isnt it?
What leaveas does ginko have?
8.Monocots are generally small plants that do not develop woody tissue.
What kind of plants are monocots?
Do monocots develop woody tissue?
Monocots are small plants,arent they?
9.The Patagonian cypress is the monarch of the southern Andes mountains.
What is the monarch of the southern Andes mountains?
What is the patagonian cypress?
The Patagonian cypress is the monarch of the southern Andes mountains,isnt it?
10.That plant was tolerant of damp soil and it flourished beside the marsh.
Where did the plant flourish?
How was the plant?
The plant was tolerand,wasnt it?
11.After the ice age the first tree seedlings were of elms, ashes and maples.
When were the first tree seedlings of elms,ashes and maples?
How were the firt tree seedling after the ice age?
The tree seedlings were of elms,ashes and maples,werent they?
12.Numerous species of cycads were abundant when dinosaurs dominated the earth.
When were mumerous species of cycads abundant?
How were the species when dinosaurs dominated the earth?
What species were abundant when dinosaurs dominated the earth?
13.Camomile tea will be a good medicine for your little child.
Will Camomile tea be a good medicine for your little child?
What will be a good medicine for your little child?
For whom camomile tea will be a good medicine?
14.Rose flowers will always be popular with the women.
What flowers will always be popular with the women?
With whom will be rose flowers popular?
Rose flowers will always be popular with women,wont they?
15.A tiny seed will be a giant tree in thirty or forty years.
When will a tiny seed be a giant tree?
What will be a tiny seed in thirthy or forty years?
What will be a giant tree in thirty or forty months?
Объяснение:
1.Due to its habitat in remote places from human civilization-beyond the Arctic circle, the polar bear retains a larger range of its habitat than any other predator. But, despite this, it is on the list of vulnerable species, as its population is only from 20,000 to 25,000 individuals worldwide.
2. the closest relative of the polar bear is the brown bear. Both species descended from the same ancestor approximately 600,000 years ago.
3. Brown and polar bears can interbreed with each other and produce hybrids, due to the fact that they are related species and they had common ancestors.
Polaar Bear
