Answer:
chromosomes.
Explanation:
Chromosomes occur as strands of long-chain protein molecules called DNA. Chromosomes are made up of two strands each called chromatid . The chromatids are joined at a point called centromere. During prophase, the chromosomes become tightly coiled and so appear shorter and thicker. Parts of chromosomes form functional units called genes which determine different activities of the cell. Genes are hereditary and can be transmitted from parent to off-spring.
Explanation:
The "fossil record" refers to the placement of fossils throughout the surface layers of the Earth. Older fossils are buried more deeply than younger ones. Scientists use the placement of fossils as a guide for determining when life forms existed, and how they evolved.
Answer:
sorry I don't know the answers
Answer: Well for starters they have Resources that animals need and habitats where they live also certain animals belong in certain climates like if it was a cold region then snow leopards polar bears seals penguins etc. they can thrive in those regions while like bears Lions gazelles thrive and warmer and dryer regions
Explanation:
