Synovial joints are and thus allow for a variety of movements. flexion of synovial joints joint angle while extension of synovial joints joint angle. adduction moves body parts the midline while abduction moves them the midline. rotation moves a body part its own axis while circumduction moves a body part such that a cone shape is outlined. inversion turns the sole of the foot and eversion turns it .

The correct answer will be  

1. flexible

2. decreases

3. increases

4. toward

5. away

6. around

7.  inward

8. outward

Explanation:

he Synovial joints are the joints which allow the movement of the body parts. The type of movement is determined by its structural type in which flexion and extension motions takes place in the anterior-posterior plane. In the limbs, the flexion decreases the angle in the bones while extension increases the angle between the bones.  

The abduction- adduction motions involve the medial-lateral motions of the bones in which Abduction moves the limb away from the midline of the body while adduction moves limb toward the midline.

Circumduction is the movement of a body region in a circular manner while rotation is the movement of the body part around its own axis.

Inversion and eversion are the complex movements in which inversion is the turning of the foot toward the midline or inward movement while eversion is reverse of this.

Thus, the selected options are the correct answer.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !