Answer:
Although you normally hear about trying to reduce or eliminate friction, it actually has some important uses.
Since friction is a resistance force that slows down or prevents motion, it is necessary in many applications where you might want to hold items or do things and prevent slipping or sliding. In those cases, there is an advantage of having friction.
Quite often uses of frction can be seen from how things would be without friction. Without friction, you would not be able to walk, drive a car, or hold objects. Pens and pencils would not work.
Explanation:
I would say the answer would be D.
Because: If a river is dammed then there is little to no flow going downstream. This will effect the life downstream and also change its conditions.
I Hope This Helped!
Answer options:
- fruit
- pollen
- flower
- seed
- spore
Answer:
flower
fruit
Explanation:
Angiosperms include all flowering plants. Therefore, all plants in this group have flowers, whereas other groups do not.
Both angiosperms and gymnosperms have seeds, but angiosperms are defined by the fact that their seeds develop within a surrounding layer of usually the flower. Both angiosperms and gymnosperms also have pollen - likely an adaptation to living on dry land. Many plants produce spores, not just angiosperms.
Angiosperms produce fruit, unlike other plant groups. This fruit is the protective layer that encases their seeds, unlike gymnosperms, where the seeds are 'naked'
The biconcave cells in blood that lack nuclei when they are mature are the red blood corpuscles.
<u>Explanation:</u>
The blood contains a combination of cells especially the Red blood corpuscles, white blood corpuscles and the blood platelets. The major function of the Red blood corpuscles is to carry oxygen and supply to all the parts of the body from the lungs and similarly carry carbon dioxide and supply to all parts of the body . To facilitate this it does not have a nuclei.
