How does the nervous system help an organism meet a challenge of life? It digests food in order to allow the organism to obtain energy.

It responds to stimuli to help protect an organism and maintain structure

It carries and transports oxygen to all the cells of the body.

It provides structure to protect internal organs, which helps protect the organism.

The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.

What is the role of dna ligase in the elongation of the lagging strand during dna replication?

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird