Which extant chordates are postulated to be most like the earliest chordates in appearance? a) lanceletsb) adult tunicatesc) amphibiansd) chondrichthyans

One common educational practice is to chart students' progress over time so that students can see their own improvement. these progress charts often lead to higher student achievement in the absence of other observable forms of reinforcement. the effectiveness of such charts in changing behavior illustrates the role of reinforcement as:

Now , use your research to decide what business is the best choice for this community. explain your choice in two to three sentences, using factual evidence to support your claim.

Which of the following describes an effect of globalization? a. car parts are manufactured in asia. b. an american company has factories in mexico. c. diamonds and other gems are sold in africa. d. china has placed restrictions on burning coal. drag the descriptions of developing and developed countries to the appropriate boxes. high income low income economy based on manufacturing economy based on services and finance widespread access to healthcare high poverty rates developing(box) developed (box) what is one development in medicine that has occurred because of new surgical techniques? a. more people die during long surgical procedures. b. transplants of organs have become more common. c. fewer people are opting for major surgeries. d. too many people are attending school to become surgeons. what most likely caused the condition shown in this photograph? a. overpopulation b. deforestation c. high carbon dioxide levels d. competition for water which of the following has occurred because of increased competition for resources? a. increased dependence on fossil fuels b. overproduction of coal c. water shortages d. overdependence on solar power what invention led to the development of smaller computers after the 1960s? a. the electronic circuit board b. the internet c. email d. the calculator