Explanation of why a tiger is clasified as a animalia chordata mammalia

What are the four steps of pond succession?

what evidence do scientist find in the fossil record that suggests there was a big extinction event that occurred 66 million years ago?

Which of the following is (are) true regarding the RDA? A. The acronym stands for recommended dietary allowance. B. There are often different values for men and women. C. It is a guideline to provide nutritional adequacy for micronutrients. D.

Mendel used pea plants to investigate A) the effectiveness of antibiotics B) alternative farming methods C) heredity D) cytokinesis

Identify distinguishing traits of most arthropods

Which of the following is a true statement? A. Individuals evolve to have adaptations. B. Individuals have adaptations that can change over time. C. Individuals have traits that may or may not make them successful at reproduction. D.

What is the purpose of the glycoprotein spikes found on some enveliped viruses

There are several ways that a mutation may occur. Which of the following not a way for a mutation to occur during the DNA replication copying process? A. Sections of genes can be removed B. Sections of genes may be added C.

How do the resurection of fern, crysts of brine shrimps and tardigrade survive with no water?

Which of these best describes Earth's mantle? A. Most dense layer, consists of the outer and inner parts B. Thinnest under the oceans and thickest under continents C. Middle layer, density increases with depth as pressure increases D.