yes in butterfly you have to have hooks on the inside of opponents(O) thighs. But when managing space, for example to set up arm drags or just to keep O from pressuring you you need to be able to put feet on hips momentarily to stop O's advance. expand for examples.
as mining becomes harder the essence of a decentralized currency no longer exists as specialized, centralized data centers exist to mine certain coins. Mining is consolidating more towards these data centers, so while it is still decentralized due to number of data centers around the world, it is not as decentralized as it could be should a PoS algorithm be used to validate new transactions
“Marginal can be considered marginal for many reasons. The reason that it’s classed as that will have a large impact on whether or not it’s all feasible to bring it into annual grain production,” says Lemke. Sandy soils are more likely to leach nutrients such as soil organic nitrogen. Sandy soils and sloping land are also “particularly fragile in terms of soil structure and erosion risks and so on,” Lemke adds. Steep land and sandy soils are drought-prone. Native prairie in southwestern Saskatchewan also has moisture limitations.