Explanation:
A placental mammal is a mammal that give birth to fully developed live young . A marsupial mammal is a mammal that give birth to live young
Answer is D or 4
Explanation: Hematite is created with two iron atoms to three oxygen atoms, and magnetite, with three iron atoms to four oxygen atoms, which are both iron oxides.
Answer:
gametes are reproductive cells such as sperm and eggs. as gametes are produced the number of chromosomes must be reduced by half.
Explanation: why? the zygote must contain genetic information from mother and from father cells so the gametes must contain half of the chromosomes found in normal body cells.
Answer:
The theory of evolution by natural selection
Explanation:
Nowadays, it is widely accepted that chimpanzees are primates closest related to us. Darwin's postulated "The theory of evolution by natural selection", in the book "On the Origin of Species" in 1859. It is a theory that explains how species evolve over successive generations by gradual changes and the selection of the most adaptive phenotypes. Anatomical, fossil, and genetic evidence support the idea of an evolutionary link as Darwin predicted between hominids (humans) and other primates.
In regard to genetic evidence, whole-genome sequence analyses have shown that humans and chimpanzees share about 98% of sequence homology. Moreover, according to the phylogenetic tree, both species evolved from one common ancestor that was present approximately 4 million years ago.
In regard to anatomical and fossil evidence, it has been discovered that the chimp brain has a similar size to human extinct relatives, and thereby also supporting an evolutionary link between both species.