Answer: The amniotic egg was an evolutionary invention that allowed the first reptiles to colonize dry land more than 300 million years ago. Fishes and amphibians must lay their eggs in water and therefore cannot live far from water. But thanks to the amniotic egg, reptiles can lay their eggs nearly anywhere on dry land.
Explanation:
Answer:
68 1/2 foot length
Or 22 5/6 yards.
Explanation:
The yard length of the part of the goal post
The base (10 foot)
The crossbar (18 1/2 )
And two arms (20 foot each)
Let's sum up the total yards
=(10 + 18 1/2 + 20 +20) foot
= 68 1/2 foot length
Or 22 5/6 yards.
Oxygen is an abiotic factor that is beneficial by-product of primary production.
<u>Explanation:</u>
The non living parts of an ecosystem that mainly affects the living organisms in it are called as an abiotic factor. These can include soil, temperature, water, oxygen and sunlight. The major energy source in earth is Oxygen which is abiotic factor.
It is very essential for the photosynthesis process to take place. Here, the plants converts water and carbon dioxide into oxygen and sugar. This becomes food for plants. Then these plants are eaten by animals. Thus oxygen is an important and beneficial by-product of photosynthesis. Oxygen is also very important for the survival of human beings.
Answer:
Trans-membrane proteins.
Explanation:
Membrane proteins are proteins that are found in the cell membranes of living organisms.
Hope this helped!
Answer:
A) 1000
Most viruses are 1000 times smaller than the average cell
