State the time when an embryo is considered a fetus

Of what is this an example? A puppy's cells have two sex chromosomes that are completely the same. A. homozygous dominant B. homozygous recessive C. heterozygous D. female it was female

True or false: 1. A Scientific theory is just an educated guess about why something occurs. 2. Taking many measurements and averaging the results may correct random errors in data. 3. A good experiment must have one factor that can be manipulated.

What does the discovery of radiocarbon dead methane near deep-sea hydrothermal vents tell researchers? A. Methane does not contain carbon-14. B. It is possible for complex organic molecules to form from abiotic factors. C.

How does analogous structures support evolution?

Crayfish : swimmerets for swimming and reproduction : : a. lobsters : uropods for reproduction c. crabs : telson for eating b. shrimp : telson for chewing d. crustaceans : gills for breathing

Hypothesis on whether radiation has the same impact on coastal, forest, and desert areas

The theory of heredity before Mendel's work was completed can be described as: a. the theory of chromosomal transmission b. the theory of blending inheritance c. the theory of particulate inheritance d. the theory of natural selection e.

How many electrons are transfrred in the ionic bond betwwn sodium and chlorine in NACI

All food connects to whai item?

What is taxonomy? a subgroup of organisms the classification of plants based on their medicinal uses the science of classification an organism's evolutionary history