农业效率不仅仅关乎产量;它还涉及资源的负责任使用。
现在很清楚,杂种形成的种子具有一个或另一个分化特征,其中一半再次发育成杂种形式,而另一半产生的植物保持恒定,并以相等的数量接受显性或隐性特征。
The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.
The ocean's resilience is remarkable, but it is not limitless.