<span>The discovery of thornless plants was made around the turn of the 20th century. To name one such thornless plant, particularly, the Blackberry plant, the deviation from the thorned blackberry canes were discovered in the United States. Since then, several different thornless blackberry varieties have been cultivated for fruit gardens.</span>
Explanation:
In thermoplastics, the arrangement of monomeric units is linear and in thermosetting plastics, it is cross-linked. Thermoplastics are usually soft, weak and less brittle, so can get soften on heating and stiffen on cooling. They can be melted, remoulded and recycled easily.
The answer is lower because having to return to a pre disturbance size will likely affect its genetic variation to be lower compared to the original population where in its genetic variation will be greater compared to those in pre disturbance size.
The answer is b because it is negative on our world
Answer:
Chloroplast
Explanation:
Both plant and animal cells have mitochondria, nuclei, and cell membranes. However, only plants have chloroplasts, as they need them to photosynthesize. Animals don't photosynthesize, so their cells don't contain chloroplasts. Hope this helps!
