Answer:
density = Mass/volume
therefore, d= 13/5 = 2.6g/cm3
Explanation:
please change subject of your question next time, this is maths or phy not biology :-)
Answer: Chemical weathering does not occur in desert.
In desert two types of weathering occurs:
1. Physical weathering
2. Chemical weathering
Physical weathering involves the disintegration of rocks by physical or natural sources like wind and this process does not change the chemical composition of the disintegrated matter. In chemical weathering process, the disintegration of rocks will result in alteration or change in the chemical composition of disintegrated matter.
Answer: i believe it is the second one
Explanation:
trust me
B a molecule made of many small molecules
Answer:
The correct answer is Active transport moves substances against the concentration gradient.
Explanation:
The principle difference between active transport and facilitated diffusion is that active transport helps in the movement of various substances in the uphill direction which means against the concentration gradient.
In simple words active transport helps in the movement of substance from the region of low concentration to a region of high concentration.
On the other hand during facilitated diffusion substances move along their concentration gradient which means from the high concentration region to the region of low concentration until the concentration of both sides become same.