Which of the following is a structure in some plants that produces male sex cells? phloem tracheophyte antheridium archeogonium what is a life cycle that alternates between sexual and asexual reproduction called? archegonium antheridium alternation of generations metamorphosis

In attempt to solve the working problems created by the industrial revolution, the united states and many countries in europe considered and/or adopted

In sexual reproducing animals once fertilization of the egg takes place, the exists as a single cell until cell division begins. a) egg b) larva c) sperm d) zygote

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?