Home wote 10 may
ctivity 1.3.4: Homework/Class Work
The Platyhelminthes
Which of the following terms/characteristics apply to the
Platyhelminthes?
(4)
acoelomate
blood system
asymmetrical
coelomate
bilaterally symmetrical diploblastic
blind gut
pseudocoelomate
radially symmetrical
through gut
triploblastic
Why is a blood system unnecessary in either free-living or parasitic
Flatworms?
(4)
[8]
Di lateral​

i do not know and i have a 100 in this class

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.