On an island, finches that fed on large, hard seeds had large beaks. finches with small beaks fed on small, soft seeds. a drought changed the vegetation on the island. after this period, the number of seeds declined. the decrease in small, soft seeds was greater than the decrease in large, hard seeds. what are two ways the decrease in seed availability will affect the population of birds on the island?
Answers: 1
Biology, 22.06.2019 05:20
Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.
Answers: 3
Biology, 22.06.2019 10:40
Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.
Answers: 2
Biology, 22.06.2019 21:30
What is the name of the idea that energy cannot be created nor destroyed
Answers: 1
On an island, finches that fed on large, hard seeds had large beaks. finches with small beaks fed on...
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