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Brilliant_brown [7]
4 years ago
11

What came first oxygen or life?

Biology
2 answers:
vichka [17]4 years ago
6 0

Life because plants and trees are considered life, and trees produce oxygen.

polet [3.4K]4 years ago
6 0

Answer:

life cos, although trees are life and trees produce oxygen, trees also need oxygen, life needs oxygen

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What is environmental pressures of a giraffe
BigorU [14]
Giraffes are quickly losing their living spaces.
four main threats are habitat loss, civil unrest, illegal hunting, and ecological changes

this is what i got from google
7 0
3 years ago
When sodium enters the neuron via chemically gated sodium channels, the membrane will depolarize. therefore, the membrane potent
Korvikt [17]
........... the membrane potential will become more POSITIVE.
A membrane become depolarize when sodium enters the neuron via chemically gated sodium channels, this means that, the membrane become more positive when sodium ions diffuse into the cells.<span />
8 0
3 years ago
The cell cycle represents the coordinated sequence of events in the life of a cell from its formation to its division into two d
Fofino [41]

Answer:

<h2>Interphase : divided into three phases, i) G1 phase, ii) S phase and iii) G2 phase.</h2><h2>Mitotic phase: i) prophase, ii) metaphase, iii) anaphase and v) telophase.</h2>

Explanation:

interphase : divided into three phases, i) G1 phase, ii) S phase and iii) G2 phase.

G1 phase: cell decide whether to divide or not and prepare itself for replication of DNA and arrange replication machinery.  otherwise it goes to G 0 phase.

S phase: DNA replication occurs in this phase.

G2 phase: cell duplicates all their contents and prepares for mitotic phase.

Mitotic phase:

i) prophase- chromosome condensation occurs,

ii) metaphase - chromosome arranges in meta-plate and spindle binds to each chromosomes  at centromere.

iii) anaphase- chromosome separates from sister chromatids.

iv) telophase- chromosome moves to each ends and formation of nuclear membrane begins.

cytokinesis:  there is division of cytoplasm and forming two daughter cells.

8 0
4 years ago
Some cities hang their traffic
Jlenok [28]

Answer:

The angle and location

Explanation:

There are some who can't perceive the order of red and green together. Having it angled up and down is safer because you know out of common sense that red is on top and green is on the bottom. Having it sideways makes the light elevated on the same level, deceiving the eye better.

7 0
3 years ago
Please read the question carefully and be sure to answer all parts of the question
SSSSS [86.1K]

Answer:

785

Explanation:

4 0
3 years ago
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