What is a combination of substances that are combined physically but not chemically

I am both unicellular and multicellular depending on how old I am. When I am getting ready to reproduce, my cells join together to make a slippery, slithering mass that is bright orange. When mature, I dry out and release millions of spores.

Describe how the transfer of energy through an ecological system could limit the number of trophies levels that system could support

Which type of water is the most dense? A. cold water with high salt content B. warm, salty water C. cold water with low salt content D. warm water with no salt

Which of the following is true about cells? a. Cells have specialized components that all perform the same functions. b. A cell's components are all identical and perform the same function. c.

Many species of bacteria have become resistant to antibiotics because antibiotics have been so widely used. now, bacteria that used to be killed by antibiotics are more difficult to treat.

Summarize the phases of photosynthesis. Describe where each phase occurs in the chloroplast

Which of the following atoms will form ions by the loss of electrons? a. Magnesium b. Chlorine c. Iron d. Flourine

Por qué la clasificación de Linneo es una teoría de la evolución?

Of the "big five" personality factors, which trait can be best described as careful versus careless?

What system includes the lungs and airways?