What important event in animal evolution marks the beginning of the Cambrian period?

the ability to swim

the ability to fly

the appearance of hard parts

the appearance of fossils

Compare and contrast mercury and venus btw it does not have science as an option i know this is not biology

If you hold your nose while eating, how are tastes affected? Why?

What is one benefit of mapping the human genome? locating the chromosomal abnormalities that cause disease having the genomes of every living individual on file choosing the gender or intellectual ability of an unborn child cloning the individuals

Which factor was most responsible for the production of oxygen by the elodea? a the presence of light stimulated photosynthesis. b the plant contained a large number of mitochondria.

Choose an example that best describes sphere interdependency. a rabbit eating grass for energy a plant using carbon dioxide for photosynthesis a deer dying and decomposing a bear catching a fish to eat

Science Which factor is the main difference between a cell nucleus and a nucleiod? A. size of the organelle B. arrangement of the cytoskeleton C. movement of the flagella D. presence or absence of a surrounding membrane

A scientist notices that a person has two recessive genes for a trait. This describes the person's A) phenotype B) genotype C) traits D) characteristics

Which area of the brain has been associated with sadness, anxiety, and depression?

How does a genotype differ from a genotype?

Which rays of the electromagnetic spectrum are responsible for causing sunburn when you spend too much time exposed at the beach? A) Ultraviolet B) X-rays C) Gamma D) Visible E) Infrared Correct answer will be given the Brainliest! : D