Select all that apply.
receptors that provide animals with information from the external environment are located in the
ears
skin
blood vessels
joints
tongue
eyes
muscles
nose

Receptors that provide animals with information from the external environment are located in the:

These receptors are known as sensory receptors as they perceive the changes that occur in the external environment and transmit the information to the nervous system.

The name of these receptors located in the respective organ is as follows :

1. Ear - auditory receptor

2. Skin - mechano (cutaneous) receptors

3. tongue - taste receptors

4. eyes -  Photoreceptors

5. nose - olfactory receptors

An example of how it detects the changes in the external environment can be understood as follows :

The substances that have odor produce chemicals known as odorants which bind to the olfactory receptors located in the nose which then produces electric signals which are transmitted via the nerves to the olfactory bulb in the brain and the smell is detected.

i would say it is

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.