A characteristics that helps an organism to survive and reproduce is the best description of an adaptation.
Option D
<u>Explanation</u>:
Adaptation is simply defined as the evolutionary process of the organism when they feel comfortable to their natural place of existence. The process takes place in many generation to generation and it is passed on with genetic inheritance. With its biological phenomena it explains a trait in organisms which helps animal to survive and reproduce. It is also process of changing to different places for the organisms. Adaptation happens through mutation or natural selection.
All elements are made of atoms
Answer:
Mature pollen grains contain two cells: a generative cell and a pollen tube cell. The generative cell is contained within the larger pollen tube cell. Upon germination, the tube cell forms the pollen tube through which the generative cell migrates to enter the ovary.
Explanation:
Mature ovum is being produced in oogenesis, while spermatogenesis has four mature sperms that contains enzymes due to that the sperm is able to penetrate an egg
Answer:
The way they sound. like the way they type if that makes sense