Which organism forms a dorsal nerve cord in its embryonic stage? A butterfly B crab C frog D wasp

Given the recent evidence suggesting that species change due to certain genetic mistakes, which of these is true? Darwin's theory of evolution was wrong. Natural selection cannot cause evolution.

Estimate the reduction in bacteria during the passage of wastewater that initially contains 106 organisms per milliliter through three stabilization ponds that are arranged in series.

Which statement best expresses the relationship between the three structures represented below? (1) DNA is produced from protein absorbed by the cell. (2) Protein is composed of DNA that is produced in the cell.

Why is volcanic soil (andisol) very fertile? a. It is rich in minerals from volcanic deposits. b. It is a young soil with low water retention. c. It has been leached of mineral nutrients. d. Volcanic activity warms the soil.

A population of cottontail rabbit gives birth to an average of eight kids baby rabbits per litter and it's only has one predator.

An individual who has an eating disorder along with intense thirst and wildly varying body temperatures may have a dysfunction of the medulla. hypothalamus. thalamus. pons. brainstem.

What consists of loose connective tissue that binds the tunica mucosa to the next layer

I tend to have an inquiring mind, and i want to know more about how water moves within the plant body. i take a common houseplant and cut the stem off about 1 inch from the soil surface.

How are mosses and horsetails similar to ferns

Determine approximately how much total energy is lost from a three step food chain if 1000 calories enter at the autotroph level