What is a fossil?
Fossils are fossilised (petrified) remains of animals/plants. A fossil though, is only a fossil, when it is from a different geological era.
How does that relate to evolution?
Evolution and fossils are very related. When we scan the DNA of different fossils, we find that the DNA can be similar to living species we have today, which helps us trace back their origins.
Tracing back a species origins is not something we do just to see how that species changed along time. When we manage to make an evolutionary chart of a species, we know how they changed, what they changed, and maybe not more, but very importantly, when the previous species were extinguished. If we know when they were extinguished, we can find out what caused that extinction:
- A lack of adaptation.
- Lack of resources.
- Temperature changes.
- Increase of predators.
- Deadly migrations.
- Other natural disasters.
So, in other words, by studying one species, we can study our own planet.
Hope it helped,
BioTeacher101
Answer:
C. 19.5
Explanation:
The simplified linear equation derived to calculate mean weight for Children aged 1-5 years: Weight (kg) = 2 x (age in years + 5.5)
Alexis weighs 6.5 pounds at birth
Assuming her development proceeds normally, after one year:
Weight = 2 x (1 + 5.5)
= 2 x ( 6.5)
= 13
∴ (13 + 6.5) pounds = 19.5 pounds.
Earth<span> can be divided into three main </span>layers<span>: the core, the mantle and the crust
Your answer would be, Core.
(Could also be called inner core)
Think of it as a watermelon, you have the crust, which is the green part, the mantle which is the whitish green part and the red which is the core.
Hope this helps.
In case you didn't get any of that, the answer is Core</span>
Biotic: Trees. Mosses. Fungi. Mammals. Birds. Reptiles. Insects. Worms.
Abiotic: Rocks. Water. Sunlight. Soil. Minerals. Temperature.
Eukaryotic cells are usually larger and more complex than prokaryotic cells, making your answer to this question D.
let me know if you have any further questions
:)
