from English Grammar Today. Efficient and effective are adjectives. We use efficient to describe something or someone that works in a quick and organised way: The new online banking system offers a convenient and efficient way to check your account. [extract from a reference for someone applying for a job]
Main Disease. Oak wilt is caused by the fungus Ceratocystis fagacearum which develops in the outer sapwood of the tree. The infected tree reacts by developing tyloses and gums which subsequently restrict the flow of water and nutrients in affected vascular tissues with the result that the tree wilts and subsequently dies (French & Stienstra, 1980). Host Range.
This is what nature does when white oak acorns sprout after falling to the ground or when red oak acorns buried by squirrels sprout and grow the following spring. We can also grow perfectly good oaks by directly planting acorns. Not all of these acorns will sprout however, and some may be dug up by squirrels and birds.