Human embryos have a developmental stage during which they have a tail and pharyngeal pouches (those pouches develop into gills in fish). how can we explain these characteristics of human embryos?

What is parasitism in biology

Why might two elements posses similar chemical prosperities? A. They belong to the same group of the periodic table? B. They have the same physical state? C. They have similar physical properties? D.

Which type of energy in the bungee cord prevents the jumper from hitting the ground after a jump? choices are: a. kinetic energy b. elastic potential energy c. magnetic potential energy d. thermal energy

Which group of organisms would Schleiden have been most likely to study? flower, pine tree, or cactus mushroom, slime mold, or mildew jellyfish, elephant, or jaguar ant, spider, or beetle

When prey produce so many offspring in a short period of time that predators can attack only a fraction of them, it is referred to as:?

A) What are the bases of mRNA coded for by this section of DNA before the mutation? Hint in RNA A pairs with U.

How does secondary succession differ from primary succession? It begins where no plants have grown. It begins on bare rock or land. Soil nutrients are already in place. Lichens and mosses form soil first.

True of False? The structure of the cell membrane is what allows water and other molecules to move in and out of cells.

Dolphins and fish have similar body shapes. isthis feature more likely a homologous or analogoustrait?

Which of the following is not a phase of gastric secretion? A. cephalic B. gastric C. intestinal D. enterogastric