How Many Times Can We Say Goodbye How Many Times Can We Say Goodbye How Many Times Can We Say Goodbye is an album recorded by Dionne Warwick, her sixth for the Arista label. It was recorded during the spring of 1983 and was released that fall. The LP was originally issued as number AL 8-8104 in the Arista Catalog. Despite strong reviews, it was a commercial disappointment, stalling at number 57 on "Billboard"'s album chart. Two singles came from the album, 'How Many Times Can We Say Goodbye?' (a duet with album producer Luther Vandross) which hit #4 Adult Contemporary and #27 on Billboard's Hot 100
Plant defense against herbivory reproduction. Many models have been proposed to explore how and why some plants make this investment in defenses against herbivores. The optimal defense hypothesis attempts to explain how the kinds of defenses a particular plant might use reflect the threats each individual plant faces. This model considers three main factors, namely: risk of attack, value of the plant part, and the cost of defense. The first factor determining optimal defense is risk: how likely is it that a plant or certain plant parts will be attacked? This is also related to the "plant apparency hypothesis", which states that a plant