Answer:
B
Explanation:
Oceanic plates are usually denser than continental plate because they are soaked with oceanic water. When two oceanic plates collide, one is subducted under the other causing the formation of a trench in between them. Occasionally, an eruption occurs forming volcanic mountains along the trench.
Answer: Option A) All types of RNA in the cell are synthesized by transcription, which uses a portion of DNA as a template for copying.
Explanation:
All types of RNA:
- viral RNA,
- ribosomal RNA,
- transfer RNA,
- messenger RNA and
- double-stranded RNA, have a sequence that is the same as 'antisense' strand of the DNA.
Thus, it is true that all types of RNA in the cell are synthesized by transcription, which uses a portion of DNA as a template for copying.
A. Recognize a problem
- 6 Jose saw bats catching insects after dark. He asked, “How do bats find the insects in the dark?
- 7 Justin wondered if dyes could be taken out of plant leaves, flowers, and stems.
- Rob read about growing plants in water wanted to know how plants could grow without soil is that
B. Form a hypothesis
- 1 Stephen predicted that seeds would start to grow faster if an electric current traveled through the soil in which they were planted.
- 2 Susan said, “If I fertilize my geranium plants, they will blossom.”
- 8 Kevin said, “If I grow five seedlings in red light, I think the plants will grow faster than the five plants grown in white light.
C. Test the hypothesis with an experiment-
- 4 Rene grew bacteria from the mouth on special plates in the laboratory. She placed drops of different mouthwashes on bacteria on each plate.
- 5 Kathy used a survey to determine how many of her classmates were left-handed and how many were right-handed.
D. Draw conclusions-
- 3 Jonathan’s data showed that household cockroaches moved away from raw cucumber slices.
During Pangea, Madagascar and India were one landmass. The species of frogs were homogenous across the
landmass. However, after continental
drift that began approximately 88 years ago,
allopatric speciation occurred to form different species on the two continents.
The dusky salamanders on the two continents that could once reproduce viable offspring 88 years
ago, cannot reproduce viably today because
they have diverged into two different species now.
