Answer:
Between one-third and one-half of all fertilized eggs never fully implant. A pregnancy is considered to be established only after implantation is complete
Answer:
<u>a) strong joints with restricted movement.</u>
Explanation:
Joints which are closely fitted cannot allow free movement because movement requires space in the joint so the bones can move in this space. So a closely fitted joint allow restricted or no movement at all. Weak joints with restricted movements are called weak because they are not well fitted closely. Strong joints with restricted movement is closely fitted, one of the example is joints of skull.
A plasma membrane is formed of two layers of phospholipids. That is why the membranes are also called phospholipid bilayer. the outer layer points inwards towards the cell and inner layer. the inner layer points towards the outer layer. I've drawn a pic and labelled it.
Mitosis is the process that is similar to binary fission, both are asexual and they both produce an identical daughter cell. So there is no genetic variation like that which would come with meiosis, which is a type of sexual reproduction that produces a daughter cell that has DNA from two different parent cells.
