Why couldnt one single dichotomous key be used for all the organisms on earth

Select all the true statements listed below. A. The Earth-Sun distance is always 1 AU. B. The speed of light is about 3 x 105 km/s. C. The Sun and the Moon have about the same angular diameter. D.

Which hypothalamic hormone stimulates the release of growth hormone from the anterior pituitary (lobe) ?

Which type of protein will fight disease? insulin antibodies ligaments genes

If 15% of a DNA sample is made up of thymine, T, what percentage of the sample is made up of cytosine, C?

When looking at graphs showing 800,000 years of past climate data, there is a direct relationship over time between temperature and the concentration of carbon dioxide in the Earth's atmosphere. a. trueb. false

Smooth muscle is found in just one place in the body. true or false

Which of the following characteristics evolved independently in mammals and birds? A) bilateral symmetry B) amniotic eggs C) jaws D) bone E) endotherm

A client is heard saying, "i like eggs, fried by meg, served on a keg, kicked in the leg and don't want her to hoopanize them ever again." what should the nurse note in the client's record?

Explain how unfavorable traits can disappear in a specie

Myoglobin, and iron - and oxygen-binding protein found in the muscle tissue of vertebrates, is 0.316% fe by mass. if a myoglobin molecule contains one iron atom, what is the molar mass of myoglobin?