All categories

3 years ago

At what stage and in what eon did the earth develop seasons?

Biology

2 answers:

melomori [17]3 years ago

7 0

Answer:

Option B, Late Precambrian eon

Explanation:

The history of geology of Earth has started somewhere around 4.6 billions ago.

Basically , it can be divided into two periods

a) the Precambrian supereon and

b) the Phanerozoic eon.

The Precambrian supereon has 90 percent of geologic time . It has 3 eons and begins some 4.6 billion years ago and extends up to the start of Cambrian Period.

a) Hadean Eon - it is the era before the formation of rocks.

b) Archean Eon - During this eon, Archean rocks metamorphized deep-water sediments

c) Proterozoic Eon - Rocks found in this eon revealed massive, rapid continental accretion supercontinent cycles, and orogenic activity

Hence, option B is correct

Svetradugi [14.3K]3 years ago

3 0

Answer:

C. Late Precambrian era

Explanation:

Eon refers to two or more geological eras forms an eon. Eon is mainly divided into four eon namely Hadean, Archean, Proterozoic and Phanerozoic. Phanerozoic includes Palaeozoic, Mesozoic and Cenozoic era. Cambrian falls under the Palaeozoic era which was the major turning point the evolution period of geological time scale. The sudden increase in many diversity of animal phyla was evolved during this period. Also, the first land plant was appeared in this period which gave a promising fact that plants will grow on the apt seasonal conditions.

You might be interested in

What are three ways a farmer could benefit from vegetative propagation?

Llana [10]

Answer:

Development of early maturing crop.

Development of high yielding crop.

Makes the plant to assume the desired shape and size.

Can obtain two or more orange varieties on the same root stock.

Ensures uniformity of genetic/clonal characteristics.

Development of drought resistant crop

Explanation:

Hope This Helps

Have A Great Day

~Zero~

5 0

2 years ago

What would happen if the distal tubule was longer?

fenix001 [56]

Answer:

The distal convoluted tubule (DCT) is a short nephron segment, interposed between the macula densa and collecting duct. Even though it is short, it plays a key role in regulating extracellular fluid volume and electrolyte homeostasis.

6 0

3 years ago

Static electricity can------------ when atoms of opposite charge come close to each other.

Marta_Voda [28]

+ and - would attract
+ and + would repel
- and - would repel
they would attract

4 0

3 years ago

Snow has been lying mountainside. Suddenly, it starts to move down the mountain. Which types of friction are observed in this av

irina [24]

Kinetic is one of them

6 0

3 years ago

The study of evolutionary relationships that includes a branching pattern showing lineages diverging is called... * 1 point

snow_lady [41]

Answer:

The study of evolutionary relationships that includes a branching pattern showing lineages diverging is called phylogenetic tree

Explanation:

The phylogenetic tree is composed of,

• Lineages → These are the taxonomic groups of interest placed in the extremes of the lines called branches.

• Nodes → These are the ramification points, which are also known as divergence points. They represent the location of the most recent common ancestor.

• Root → This is the older common ancestor that all lineages share. The first one in the tree.

Two or more lineages are more related to each other if they share a recent common ancestor. This means that they all diverge from the same node.

Two or more lineages are less related to each other if they lack a recent common ancestor. This is, the node from which these lineages diverge is placed far away in the tree.

There are also different phylogenetic relationships between lineages.

• Apomorphies → Occur when the involved lineages share a trait that they inherited from their most recent common ancestor. This trait evolved for the first time in this ancestor. → This relationship is a homology.

• Plesiomorphies → occur when the involved lineages share a trait inherited from a common ancestor, but that is older concerning the present traits exhibited by other descendants of the same common ancestor. → This relationship is a homology.

• Homoplasy → Lineages share a trait that evolved independently in each group. → This relationship is an analogy.

6 0

3 years ago