The answer is 2) 12 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
But planning and maintaining But first you can help to prevent some of the most serious environmental land and aquatic habitations reduce the quality of water for human consumption buffers protect the environment
The KT boundary marks a mass extinction event. the KT boundary is the time between the Cretaceous and Tertiary periods. An asteroid hit the earth at the end of the Cretaceous and that caused the end of the Cretaceous period. Before the KT boundary, pollen from angiosperms and gymnosperms is high. After the meteor hits the earth, a mass extinction occurs and the amount of pollen from gymnosperms and angiosperms decreases dramatically, while the amount of spores from ferns increases. During the Cretaceous period there were many species of gymnosperms and angiosperms but they disappeared at the KT boundary, when the asteroid hit the earth.
<span>A person who has rh- blood can develop rh agglutins through;
1. Pregnancy.
2. Transfusion.
3. Exposure to blood.
Agglutination is termed as clumping of particles. It is the process which occurs when an antigen is mixed with its corresponding antibody known as isoagglutinin.
When people are being given blood transfusion of wrong blood group then the antibodies will react incorrectly with the transfused blood group, then the erythrocytes clump up and stick together which causes them to agglutinate.</span>
<span>D. In a study of the effect of lawn fertilizer on the health of a
backyard pond, biologists grow two colonies of duckweed in a large flask to
represent pond ecosystems. </span>
The scientific design in which has limitations
due to oversimplification is the statement “in a study of the effect of lawn
fertilizer on the health of a backyard pond, biologists grow two colonies of
duckweed in a large flask to represent pond ecosystems”. Oversimplification is
an overview and generalization of a statement to miscomprehension,
misperception or even error. It overlaps the true statement.
