Which of the following is a theory for the dinosaur extinction?

1. Dinosaurs were allergic to pollen

2. Increased Radiation Levels

3. Diseases From Other Animals

4. All Of Above

What are some characteristics of polyploid plants

Why does the weathering rate increase at higher elevations?

Phrenology is the study of bumps on the head to predict a person's personality or behavior. It was developed in the late 1700s when a German doctor, Franz Gall, discovered that many criminals had particularly bumpy heads.

Briefly describe sexual reproduction in plants.

Males of different species of the fruit fly Drosophila that live in the same parts of the Hawaiian Islands have different elaborate courtship rituals. These rituals involve fighting other males and making stylized movements that attract females.

Which of the following contain only prokaryotes? A) Domains Bacteria and Eukarya B) Domains Archaea and Bacteria C) Only Domany Eukarya D) Domains Archaea and Eukarya

The word below is the scientific name of a species of protists that causes algal blooms. Which of the following answer choices best represents the bolded word in the scientific name below? Karenia brevis class species kingdom genus

What is a Barr body, and where is it found in a cell? b) Define the Lyon hypothesis.

Which phylum if algae stores food in the form of floridean starch

The moon rotates around the earth at a speed of 2,288 miles per hour. Is the moon accelerating?