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Q: Mammals have evolved a series of novel cranial innovationsrelative to generalized amniotes. List these novelties and clearlyexplain their functions and interdependence (eg. Why mammals couldnot exist without all of them).

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Deanna Hettinger
Deanna HettingerLv2
28 Sep 2019

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Related questions

1. What features of rats make them good experimental models tolearn about factors that affect humans?
2. What external features of rats are common to all mammals?
3. Give 2 examples of how mammals are diverse externalcharacteristics.
4. Why do feet, pals, ears of rats not have hair?
5. What is the function of the pelage other than insulation?
6. Can you suggest a function for vibrissae?
7. How lon are the vibrissae in relation to the head and width ofthe body?
8. How to upper incisors mesh with the lower incisors?
9. Are any teeth other than incisors present?
10. Why is the mouth of a rat referred to as subterminal?
11. How does the position of the eyes of a rats head differ fromthat on a humans head?
12. What is the function of the large pinna in rats?
13. Are teats exclusively mammalian structures? Why do you thinkso?
14. What term similar to quadruped describes animals such as humanswith two leg?
15. What digitigrade animals do you racall?
16. Are humans plantigrade or digitigrade?
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18. What are the relative sizes of the braincases in humans andrats(measure circumference)?
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What is the phylum, dichotomous key and classification for a earthworm, parrot, centipede and heart worms.
I also need these questions answered:
which phyla lack organs? what type of symmetry do they have?'
list all of the phyla that show cephalization.
do all organisms on the table have 3 germ layers. if not whichphyla have fewer than three germ layers.
one phlym on the table has more species than all the others. statethe name of this phylum, and provide several different examples ofspecies found in this phylym.
fish do not all have the same skeletal structure. describe thedifferences among fish from the most primitive to more advancedtypes of fish.
describe the three types of mammals based on how their youngdevelop.

The animals on the table are: jellyfish, snail, earth worm,butterfly, sponge, starfish, parrot, centipede and heart worms.

Q6: Biomagnification occurs when

A- toxic substances that accumulate in one organism get transferred to its predator

B- birds of prey are harvested by humans
C- organisms take up toxic chemicals from the environment

D- toxic substances threaten ecosystem services

Q7: A good hypothesis is

A- eventually turned into law

B- testable and falsifiable

C- proof of a theory

D- a fact that is supported by fundamental principles of physics and chemistry

E- a rule of thumb

Q8: The precautionary principle

A- is the same as the "innocent until proven guilty" approach

B- brings substances to market cautiously, only after extensive testing

C- brings products to market relatively quickly after limited testing, and are removed when more extensive testing proves them harmful

D- states that mandatory testing will hamper the introduction of products that consumers want

Q9: What is true about native species on the Hawaiian islands?

A- island dwelling species that have lost defenses are vulnerable to extinction when enemies are introduced

B- many evolved for millions of years without needing to defend themselves against the threat of predation by mammals

C- many are endemic

D- all of the above are true

Q10: Logisitc growth?

A- has no limiting factors and populations rise exponentially

B- has limiting factors that determine a carrying capacity

Q11

_________ have already undergone the demographic transition.

A- developing countries

B- developed countries

C- countries with high replacement fertility rates

D- agrarian societies

E- none of the above

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