Which of the following pairs of vertebrate classes are most like each other?

A) birds and fish

B) reptiles and mammals

C) amphibians and reptiles

D) fish and mammals

When a plant stem bends towards sunlight, what change does auxin promote in the cells on the side of the stem away from the light? A. Translocation B. Cell differentiation C. Cell elongation D. Transcription

The term facultative anaerobe refers to an organism that A) Doesn't use oxygen but tolerates it. B) Is killed by oxygen. C) Uses oxygen or grows without oxygen. D) Requires less oxygen than is present in air. E) Prefers to grow without oxygen.

What is the importance of the villi in the small intestine

How does a newborn animal know exactly what to do the moment its born

Hormones are made in soil and affect parts of plants

How a biologist's reseach can proceed from an idea to a published article

How many times do the nostrils of a frog open and close in one minute

What regulates the enzymes present in an organism A. Phenotype B. Genotype C. Proteins D. Carbohydrates

What is the importance of the excretory system?

What are four sources of minerals?