It’s A because when changing it to scientific notation it goes to 2.75 and when going to the left from the decimal point it is negative
Answer:
2: Amount of precipitation, average temperature
3: Desert
4: The tundra
5: All of the above
The Sun is a major source of energy for most ecosystems and organisms.
<h2>Answer is option "B"</h2>
Explanation:
- Fossils are formed by unusal ways of minerals,energy and other substances. the sap solidifies and frames the semiprecious material called golden. In certain bits of golden the buried survives from living beings can be found. Volcanic ejections can shape fossils when creatures get caught in the hot debris streams. Right now, the fossil is a hole looking like an animal.
- Truth be told coal is the fossil record of entire timberlands; in any case, singular plant structures normally don't make due as the plant materials are compacted to short of what one-hundredth of their unique size. the hard part of plants are remain the fossil.
- So as to get fossilized, creatures must kick the bucket in a watery situation and become covered in the mud and residue.
- hence, the right answer is option B "Plant lived near the poles,but landmasses have drifted to current locations".
Answer: It will affect muscle contraction because it is needed for the formation of muscle contraction cross-bridge.
Explanation: During muscle contraction calcium binds to troponin, a protein complex that regulates muscle contraction by exposing the binding site of actin filament. Actin filament active site is where myosin head binds to, creating a cross-bridge using enzyme ATPase to speed the reaction. Calcium ion are needed to activate troponin movement, otherwise it stays in its inactive form blocking the active site of actin filament. Without calcium ions, troponin will not move and there will be no muscle contractions.
