Bob davison describes the endangered species act (esa) as an effective tool for conserving biological diversity. what is his rationale for the value of focusing on individual species? a) a focus on individual species is cheaper than protecting entire ecosystems. b) establishing public empathy for charismatic species provides an opportunity to educate people about lesser-known species. c) the public is not concerned about the economic costs of individual species recovery. d) the public tends to value intact ecosystems over particular plant and animal species.

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. threat method number of species that benefit number of years to see benefit habitat fragmentation reforestation 450 8 introduced prey species biological augmentation 150 2 which statement is an accurate explanation of the information in the table? a. biological augmentation would benefit only a few species because it is typically not very effective. b. biological augmentation would take less time to be effective because it targets the majority of prey species. c. reforestation would take the longest time to be effective because trees take several years to grow. d. reforestation would not benefit many species because most forest species live on the ground.

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.