Inna finds an unique fossil in her backyard along with a fossilized tooth. Fossils of bones, teeth, and shells have actual physical remains. So, the correct options for 1, 2, 3, 4, 5, 6 and 7 are D, (C, D and E), D, B, (C, D and E) ,D and D respectively.
Fossils are the fossilized remains of organisms that have been supplanted by rock material, including traces of species like bacteria, fungus, and single-celled organisms. The remains or evidence of prehistoric life that has been preserved through natural processes are known as fossils.
Shells, teeth, and bones are examples of fossilized organic matter. Scavengers are prevented from devouring organism remains by rapid burial. Fossilization requires stable geologic conditions. We can learn about former species' potential evolution, ages at death, and life cycles from their fossils. The best proof that a region once experienced a tropical environment is insects trapped in amber. Burrows in a sedimentary rock bed indicate that dinosaurs formerly inhabited the area.
Therefore, the correct options for 1, 2, 3, 4, 5, 6 and 7 are D, (C, D and E), D, B, (C, D and E) ,D and D respectively.
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O They conjugate with plants nearest them.
Insects and other organisms carry pollen to other flowers.
Immotile flowering plants accomplish fertilization with the help of Insects and other pollen from organisms that carry pollen to other flowers.
Explanation:
by studying the parents’ karyotypes
b.
by studying the family’s pedigree chart
c.
by exploring new methods of genetic engineering
d.
by determining whether the parents have codominant alleles
Answer:
The answer is B. By studying the family’s pedigree chart
Explanation:
Cystic fibrosis is an inherited disorder that tends to be fatal, since it damages the lungs and digestive system. Cystic fibrosis affects the cells that produce mucosa, sweat and gastric juices, causing them to become thick and sticky, causing the tubes, tracts and channels to become clogged. It is a hereditary disease, caused by a defective gene (so the best way to predict it would be through studying the family's pedigree chart) that leads the body to produce an abnormally thick and sticky fluid.
The reptile's body temperature rises when the external temperature rises. When the temperature drops, so does his body temperature. If a reptile feels cold because the external temperatures have made his blood cold, he'll lie in the sun to warm up. However, if the external temperature is too high, he scurries under a rock, dives in a pool or finds some kind of shade where he can cool down. Reptiles and other animals with ectothermic systems are vulnerable to extreme changes in temperature because they can't control their temperatures internally. They can control their body temperatures only by moving to an environment with a suitable ambient temperature.
Answer:
1. It is present as the outermost layer in animal cells and lies below the cell wall in plant cells.
2. The cell membrane surrounds the cytoplasm of living cells, physically separating the intracellular components from the extracellular environment.
3. The cell membrane is semi-permeable, ie, it allows some substances to pass through it and does not allow others.
Explanation: The cell membrane (or plasma membrane) surrounds all living cells, and is the cell's most important organelle. It controls how substances can move in and out of the cell and is responsible for many other properties of the cell as well.The membranes that surround the nucleus and other organelles are almost identical to the cell membrane. Membranes are composed of phospholipids,proteins and carbohydrates arranged in a fluid mosaic structure,
Answer: small protects cell and let's things in
Explanation: because.