Answer:
streamlined bodies in dolphins and ichthyosaurs
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Peripheral proteins are held to the membrane surface primarily through electrostatic or hydrogen bonds.
Some <u>birds</u> are both primary consumers and secondary consumers.
<u>Explanation:</u>
Primary consumers are the class of animals that are feeding upon the producers as their primary food. Secondary consumers are the class of animals that are feeding upon a primary consumer to feed themselves.
Some of the birds like sparrow, humming birds etc feed on fruits and seeds of plants to maintain their lives. They are thus the primary consumers. Others like eagle, crow eats on flesh of primary consumers. So they are secondary consumers. Thus birds can be both primary consumers and secondary consumers.
Prophase I
The chromosomes condense, and the nuclear envelope breaks down & crossing-over occurs.
Metaphase I
Pairs of homologous chromosomes move to the equator of the cell.
Anaphase I
Homologous chrmosomes move to the oppisite poles of the cell.
Telophase I and Cytokinesis
Chromosomes gather at the poles of the cells & the cytoplasm divides.
Prophase II
A new spidle forms around the chromosomes.
Metaphase II
Chromosomes line up at the equator.
Anaphase II
Centromeres divides & chromatids move to the opposite poles of the cells.
Telophase II and Cytokinesis
A nuclear envelope forms around each set of chromosomes & the cytoplasm divides.
