Which one of these productive methods is the only one available to mosses and ferns

1. Sperms

2. Spores

3. Eggs

4. Seeds

Mother is blood type AB. Father is blood type O. What are the possible blood types of their offspring? (Use a scrap paper to draw a Punnet square to get your answer, IF you want)

Which of the following is an example of an ecosystem? A) zebras and lions that pray on them B) coral reef with all the fishes and invertebrates living in and around it C) flowering plants and all the birds and insects that pollinate them D) male

Which of an atom's subatomic particles are involved in chemical bonding? A. neutrons only B. valence electrons only C. neutrons and protons only D. protons and valence electrons only

Predict the effect of mutations on organisms.

During a lunar eclipse, what occurs?

What organism does not have a cell wall

Which of the following is a stress-related disorder/disease? (Choose all that apply.) -Migraine headaches -tense muscles -heart disease -tmj dysfunction -asthma -anxiety disorder -backache -chronic fatigue -high blood pressure -cold and flu

Which conversion is controlled by insulin?

which process relies most on gravity? A. Mass wasting B. Physical weathering C. Chemical weathering D. Erosion

Name two substances in the body that will move based on the principles of diffusion