Which of the following describes a possible effect that an increase in carbon dioxide in the atmosphere would have on an ecosystem?

a.
animal productivity would increase because more carbon dioxide would be available for cellular respiration.

b.
plant productivity would increase because more carbon dioxide would be available for photosynthesis.

c.
all of the organisms would immediately die because carbon dioxide is poisonous to both plants and animals.

d.
plant productivity would completely stop because plants cannot use carbon dioxide for life processes.

*will mark brainliest for first correct answer* which of the following is most likely to affect the biodiversity of a park ecosystem? a. less rain than usual for several months b. ongoing pollution from a nearby factory c. park rangers plant a new type of tree d. disease wipes out an entire population

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

How do you date a sample of rock that you suspect as being one of the earliest on earth