Explanation:
Simple machines make our work easier. There are many types of simple machines.
(1) Seesaw is an example of a first-class lever. In the first class lever, the fulcrum is present in the middle of the lever.
(2) Pencil sharper: It is a compound machine. It consists of wheel and axle and wedge also.
(3) Bottle opener: It is a type of 2nd class lever. In this, the fulcrum is present at one end.
(4) Forearm: It is an example of a third-class lever. Fulcrum is present at one end in the third class lever.
(5) Nail: It is an example of the wedge as all knives or nails are wedges.
Answer:
1.1 would be the densiry
explanation
p=m/v is the density formula p being density and m being mass and v being volume
multiply 3 by 6 by 4 to get volume of 72
80÷72 = 1.1
It has to do with surface area to volume ratio.
Option D is the correct answer.
To what extent has the presence of a true coelom in animals changed over the course of evolution?
A coelom is a body cavity that is formed from the mesoderm tissue.
Option D - The presence or absence of a true coelom appears to have changed multiple times during the course of evolution.
1.99
2. 1open the frige 2put the elephant in 3close the frige
3. 1open the frige 2take the elephant out 3put the deer in 4close the frige
4. the deer you left in the frige
5. the alligaters were at the lion kings b-day
6. the brick from the plane hit her on the head