When did soft-bodied, multi-celled animals first appear?

A) Soon after Precambrian time ended

B) late in Precambrian time

C) very early in Precambrian time

D) In the middle of Precambrian time

A bacterial cell can divide several times in a hour. few animal or plant cells can divide as quickly. which of the following statements best explains this difference?

Describe four ways in which natural processes add harmful particles in air

Vitamin d - resistant rickets is an x-linked dominant bone disorder. a man with this form of rickets marries a normal woman. what proportion of the couple's daughters is expected to have vitamin d - resistant rickets

Structural differences between prokaryotic and eukaryotic cells?

In the frog genus, when certain species attempt to mate with other species, embryo development is halted at various stages including zygotic segmentation, blastula formation, gastrulation, or in the final phases of embryo development.

How do cells become specialized for different functions?

Organisms do not adapt as a result of competition for resources. true or false

How do most cancers arise? question 1 choices choice a., from a single mutations arising simultaneously in a cluster of cells choice b., from a series of mutations that arise in the descendants of a single somatic cell choice c.

Briefly describe your experimental design for the first experiment. Make sure to include: a. The conditions you used to feed your mice (e. g., the foods you fed your mouse and the length of time the mouse was in the light box) b.

What caused the earth to develop layers as it cooled?