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There's lots of resources that the Amazon rainforest provides to the people around the world, of which the most important ones are:
- Fresh water; it contains around 20% of the world's fresh water.
- Oxygen; it is the biggest producer of oxygen on the planet.
- Food; healthy food distributed all over the world.
- Medicinal plants; thousands of plants that can cure and prevent most of the known diseases.
- Minerals; gold, copper, silver, zinc, tin...
Answer: B. species A and species B can no longer exchange genes.
Explanation:
Geographic isolation is a kind of reproductive isolation in which the organisms of the same species are separated by a geographical barrier like flood, river and others. The separated members of the same species are unable to copulate and they develop new traits according to the new environment. This leads to formation of new species and the process is called as speciation.
According to the given situation, the two species A and B are geographically separated thus they will not be able to exchange their genetic materials due to geographical barriers.
Divergent creates cracks which later on open the earth apart
Convergent, the imperceptible force within the earth brings it together forcing the earth to fold
Answer:
Part of a train timetable is shown.
Aberystwyth
Shrewsbury
Birmingham
08 30
10 17
12 30
14 19
13 55
16 05
17 20
a)
Bob catches the 12 30 train from Aberystwyth. He arrives in Shrewsbury 8 minutes late. What time does he arrive in Shrewsbury?
b) How long is Bob's journey from Aberystwyth to Shrewsbury? Give your answer in minutes.
minutes
11 30
15 30
Judy catches the 12 30 train from Aberystwyth.
She arrives in Shrewsbury on time.
She attends a job interview.
She gets back to Shrewsbury station 1 hour and 50 minutes later. Is she back in time to catch the 16 05 train to Birmingham?
You must show your working.
