Answer:
The correct option is b
Explanation:
Phospholipids are lipids that contains a phosphate group, which forms the "head" of the molecule and is hydrophilic (water loving). The "tail" of phospholipids is made of two fatty acids which are hydrophobic (water fearing). The phospholipid in the cell membrane acts as a selectively permeable barrier that regulates what goes in and out of the cell <u>thereby protecting the cell from some external molecules and ions</u>.
Water is a limited natural resource, vital for the expansion and development of, not only our specie, but each individual living organism in the planet. Hence, in a community proper water management is a must in order to make sure that water be maintained and cared for -used wisely. In one research, it is estimated that by 2025 more places will feel water scarcity than decades ago.
Answer:
Bones are organs composed of hard living tissue providing structural support to the body – it's scaffolding. It is a hard matrix of calcium salts deposited around protein fibers. Minerals make bone rigid and proteins (collagen) provide strength and elasticity. ... The outer layer of bone is called Cortical bone.
Answer:
in the geosphere
Explanation:
The drill will eventually stop within the geosphere.
- The biosphere is the region of the earth populated by living organisms.
- The geosphere is the region of the earth made up of solid rock
- The atmosphere is the gaseous part of the earth.
- The hydrosphere is the liquid part of the earth or where water dominates the earth.
The drill pierces through the geosphere as it initially passes through the hydrosphere. Eventually, the drill stops within the geosphere.
