Answer:
By the research and the robotics
Explanation:
It can help the environment because the robotics can research and find the fossils.
B. 2.883 million kilometer
Plasma membranes regulate what substances go into and out of the cell and helps provide a barrier to bad toxins or bacteria. It is also allows necessary proteins in and keep pathogens out. The ersearch on plasma membranes is very important i justified with the following:
- stydying the plasma membrane's interaction nutrients helps to understand the way in which active tarsnport occurs
- helps to undertand the communication between cells.
Answer:
D
Explanation:
many chemical changes can be smelled, or heard, etc. And can be seen on a molecular level. Chemical changes create new substances:
Na + Cl = NaCl