Organisms gradually change the environment
Answer:
In gymnosperms the female reproductive part is the cone and the pollen is the male reproductive part. Pine trees and other gymnosperms produce two types of cones. Other gymnosperms and pine trees produce two kinds of cones. The larger female cone, which is the seed cone and the male cone called the pollen cone.
The cones of gymnosperms, flowers of angiosperms, and the reproductive fronds of ferns all have a fundamental reproductive unit that is a leaflike organ bearing sporangia.
Answer:
Taken in 1952, this image is the first X-ray picture of DNA, which led to the discovery of its molecular structure by Watson and Crick. Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA molecule.
Answer:
In animals, the process of respiration is aerobic respiration, exchange of gases takes place ( carbon dioxide leaving the cell, oxygen entering)
Single cellular organisms can exchange gases directly across their cell membrane through the process o diffusion.
Large animals cannot maintain gas exchange by diffusion across their outer surface. A respiratory surface is covered with thin, moist epithelial cells that allow oxygen and carbon dioxide to exchange. Those gases can only cross cell membranes when they are dissolved in water or an aqueous solution, thus respiratory surfaces must be moist.
Explanation:
