Whixh abiotic factor is necessary for animals to survive in an aquatic ecosystem?

a. dissolved O2

b. light

c. low salinity

d. algal blooms

e. dissolved CO2

A muscle that inserts on the body of the mandible is probably involved in

A student formulated a hypothesis that cotton will grow larger bolls (node) if magnesium is added to added to the soil. The student has two experimental fields of cotton, one with mannesium and one without.

Which of the following groups of phase changes occur only when heat energy is removed or released from water. a. melting, evaporation, sublimation b. condensation, freezing, deposotion c. sublimation, deposition, melting d.

There is currently less reason to be concerned about contracting HIV because there is improved treatment and the disease is no longer fatal. a. True b. False 5. Hepatitis B and C are blood-borne viral infections.

Why are beneficial mutations essential for evolution to occur?

What covers the ends of bones in adults? A blood B cartilage C marrow D ligaments

If gene expression control occurs during transcription, when did it occur?

If selfing starts in a previously randomly mating population composed of 0.50 heterozygotes, what is the frequency of heterozygotes after three generations of selfing

The movement of a bird away from a grass fire is caused by A) receptors initiating a stimulus B) impulse forming in a muscle tissue C) muscles responding to a stimulus D) effectors synthesizing neurotransmitters

What does a reflectd light look like