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Xelga [282]
1 year ago
11

Igneous rock is formed from the cooling and crystallization of magma or partially melted rock. Igneous rock can be either intrus

ive or extrusive. Intrusive igneous rock has larger crystals, and extrusive igneous rock has small crystals. Sometimes the small crystals are not even visible. What determines whether igneous rock is intrusive or extrusive? A. where the rock was formed B. the density of the rock C. the chemical composition of the rock D. where crystals in the rock are found
Biology
1 answer:
11111nata11111 [884]1 year ago
4 0

Answer:

A

Explanation:

Intrusive igneous rocks cool from magma slowly because they are buried beneath the surface, so they have large crystals. Extrusive igneous rocks cool from lava rapidly because they form at the surface, so they have small crystals.

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Aleks04 [339]
Oxygen is the correct answer !
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2 years ago
Systematists have used a wide variety of traits to reconstruct the phylogenies of particular groups of organisms. Which one of t
Effectus [21]

Answer:

5. all of the above traits combined

Explanation:

Phylogeny has to do with the study of evolutionary relationships among living organisms based on the premise of the theory of organic evolution that states that all living organisms came from a common ancestor.

Phylogeny incorporates molecular, morphological, anatomical, biochemical and behavioural traits in order to arrive at a phylogenetic tree that represents ancestral lineages.

<em>Hence, the correct option is option 5. </em>

5 0
2 years ago
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Analogy: Thwart:sabotage; cold:_______________.
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4 0
2 years ago
According to the phylogenetic tree diagram, modern birds are most closely related to ___________.
ra1l [238]
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According to the phylogenetic tree diagram, modern birds are most closely related to an advanced dinosaur. 

3 0
2 years ago
Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers, and the other has white, terminal flowers
Debora [2.8K]

Answer:

Explanation:

<em>The probability of producing plants with white axial flowers would be 1/16.</em>

From the illustration, All F1 individuals had red, axial flowers. It thus means that red and axial genes are dominant over white and terminal genes in the pea plant.

Let us assume that the allele for flower color is A (red) and a (white); and the allele for flower location is B (axial) and b (terminal).

Pure-breeding red, axial flower = AABB

Pure breeding white, terminal flower = aabb

AABB   x    aabb

F1 genotype = AaBb - all red and axial

At F2:

AaBb   x   AaBb

Progeny

<em>9 A_B_ red/axial</em>

<em>3 A_bb red/terminal</em>

<em>3 aaB_ white/axial</em>

<em>1 aabb - white/terminal</em>

Hence, the probability of producing plants with white axial flowers in the F2 generation is 1/16.

8 0
1 year ago
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