The specialization in the structure and function of cells that occurs during the development of an

organism, results from selective activation and deactivation of the cell's genes.

Scientists discovered fossil evidence of mesohippus, an ancestor of the modern horse. Mesohippus lived in North America about 40 million years ago. Mesohippus was about two feet tall, ran on hooves with three toes, and had large, grinding teeth.

If a forest contained mostly light-colored trees, which type of moth would you expect to be most common?

Approximatley how many human genes are there

Which of the following statements is not a description of Venus? Group of answer choices Closest planet to the sun Has a thick atmosphere One of the rocky planets Has no moons

A zygote develops into a multicellular organism through (1) mitosis and specialization (2) mitosis and meiosis (3) recombination and communication (4) genetic engineering and natural selection

Which Scientists Gave Cells their name while observing cork under a microscope

What. System rid the body of carbon dioxide?

What is the process of mountain building called

Sexual reproduction is the reproductive process that 1) keeps species from changing. 2) produces identical offspring. 3) causes mutations. 4) creates genetic variety.

About half of the forests that covered the earth in the early 1900s have been cut down. Discuss the impact this has on carbon dioxide levels in the atmosphere. Support your answer.