Answer:
1. Leads to mixing of genetic materials hence variation within species
2. Leads to offspring with hybrid viguor that tend to show high and adaptability to environmental conditions.
3. Variations due to sexual reproduction leads to improvement of species hence evolutionary changes that may bring about specialisation
Density is mass of object per unit volume
Answer:
Ion pumps can be distinguished from ion channels on the basis that ion pumps actively transport ions against a concentration gradient, while ion channels allow ions to passively flow down a concentration gradient.
Explanation: