Arachnids were some of the first land animals. How did

the development of methods for conserving water allow

them to colonize land?

Which cell structures are found in plant cells, but not in animal cells? Check all that apply. I cell wall cell membrane endoplasmic reticulum nucleus chloroplasts mitochondria Intro

Medical professionals wear lead aprons to protect them self's from x rays because prolonged or repeated exposure can cause mutations in dna which can lead to

Select all of the answers that apply. Warm water is less dense than cold water is more dense than cold water has higher salinity than cold water has lower salinity than cold water is found near the poles

Which types of marine life will be hurt by increasing carbon dioxide levels? 1. Algae 2. Clams and Snails 3. Coral 4. All of the above

As the number of insect species declined due to spraying, the blueberry production decreased. Explain how these two events might be related even though the pesticides did not land directly on the blueberry plants

Explain why most quartz is useful?

What is the pattern of expression for autosomal genes?

The process by which the particles of a gas randomly pass through a tiny opening is called

What is an unusual defense some lizards have developed to protect themselves?

What types of cells have half the number of chromosomes?