Many though not all mollusks have a shell. what secretes the shell

What monomer is made up of glycerol and another molecule?

Which structures are used by a paramecium for maintaining water balance

Where does the RNA polymerase bind during the process of transcription? A. The polysome B. The operator C. The promoter D. The initiator

Which are characteristics of mammals? Check all that apply. A) internal fertilization B) three-chambered heart C) endothermic D) highly developed nervous system E) several nearly hollow bones F) always live on land

9. If a farmer stops using his farmland for crops, and no other humans come to grow their crops there, weeds and grasses will begin to grow. Why is this considered secondary succession and not primary succession? a. A new ecosystem developed b.

What us one role that lipids play in the boy

Which meninx surrounding the central nervous system contains blood vessels that nourish the neural tissue?

Protists use all of the following methods to obtain energy except A. photosynthesis / B. ingesting food / C. converting atmospheric nitrogen / D. absorbing food.

I need an answer quickly How is precipitation related to high - and/or low-pressure air? Question options: High-pressure systems lead to rain. Low-pressure systems lead to rain. Both high - and low-pressure systems lead to rain.

The activation energy for chemical reactions in living things is relatively high or relatively low?