I believe the correct answer from the choices listed above is option B. It is sand that is the most permeable. It can be proved by the value of the <span>Permeability variation where send has the highest value of 5.0. Hope this answers the question. Have a nice day.</span>
Cell walls are rigid which gives plants their shape. Animals have only cell membranes which allows animals to be flexible as animals are moving organisms. Plants, on the other hand, are sturdy and upright and are sessile organisms. Cell walls allow plants to grow upright as high as their maximum height and to be sturdy enough to survive harsh environments.
Answer:
B. It allows for genetic variation.
Explanation:
As prophase progresses, homologous chromosomes come to lie side by side and become intertwined rather like a zipper. This process is called synapsis. During synapsis, homologous chromosomes exchange genetic material between one another which allows for genetic variation. This exchange is called crossing over.
Answer:
Rods and cones
Explanation:
The retina contains the light sensitive cells, the cones and rods. It is here that an image is formed. Rods contain the photochemical pigment rhodopsin for dim light vision. Cones contain the photochemical pigment iodopsin for bright light and colour vision.
