1) as time passes, which of these is decreasing?
a) amplitude
b) crest
c) trough
d) wavelength

2)which graph best represents the relative speeds of electromagnetic and mechanical waves through space?
a)
b)
c)
d)

3)which of these waves would have the greatest amount of energy?
a) a
b) b
c) their energy is equal
d) there is not enough information

4)at sunset, the sun appears reddish. what is most likely the reason for this phenomenon?
a) sunlight travels through a longer distance at sunset and interacts with more particles.
eliminate
b) sunlight travels through a shorter distance at sunset and interacts with more particles.
c) sunlight travels through a longer distance at sunset and interacts with fewer particles.
d) sunlight travels through a shorter distance at sunset and interacts with fewer particles.

5)the trough of a transverse wave is best shown by choice
a) a.
b) b.
c) c.
d) d.

7)mr. mann's students were studying the properties of light in science class. he told them to put a pencil in a beaker of water, make observations, and then draw what they observed. one group drew the picture seen here. mr. mann explained that when light passes from air into the water, the light waves bend, or and the pencil appears to be broken.
a) diffract
b) reflect
c) refract
d) transact

water   molecules stay close to each other through cohesion, the collective action of hydrogen bonds between water molecules. cohesion plants draw water upwards from the root through the stem's transport tubes (xylem) to the leaf. this transport occurs even in large trees and against gravity. transpiration, evaporation of water from plant leaves, creates a tension on water molecules being pulled up from the stem and roots.

water also has high (the attraction of one substance to another) properties because of its polar nature. adhesion of water molecules to plant cell walls counteract gravity while water is transported from roots to leaves.

water exhibits a very high surface tension when compared to other liquids. surface tension is a property of a liquid that holds the surface together and allows it to resist an external force. by capillary action, the water forms concave menisci inside the pores. the high surface tension of water pulls the concavity outwards, generating enough force to lift water from the roots to the leaves of plants.

thus, cohesion, along with adhesion and surface tension creates a capillary action that keeps water molecules interacting and moving through the plants out to the leaf cells.

therefore, option d) is the correct answer.

explanation:

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

56 moles of   lieter in chemistry

d

explanation: