If you are creating a new learner account between 8am on Saturday 6 June - 8am on Monday 8 June, you might experience delays or difficulties in the process. This is due to an upgrade to a system related to new account creation. We apologise for the inconvenience.
If you are creating a new learner account between 8am on Saturday 6 June - 8am on Monday 8 June, you might experience delays or difficulties in the process. This is due to an upgrade to a system related to new account creation. We apologise for the inconvenience.
If you are creating a new learner account between 8am on Saturday 6 June - 8am on Monday 8 June, you might experience delays or difficulties in the process. This is due to an upgrade to a system related to new account creation. We apologise for the inconvenience.
The comparative method can be used to investigate how culture relates to environment. The reproductive pattern of human females is a particularly interesting puzzle for evolutionary biologists.
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Dismantle the family with Darwinian tools
The current decline in family size seems to contradict the Darwinian model of inclusive fitness but it can be explained as a tradeoff between the cost of bringing up children and the number of children in a family.
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Why are families getting smaller?
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