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son4ous [18]
3 years ago
7

What has caused most of the mass extinctions on earth?

Biology
1 answer:
Leto [7]3 years ago
5 0
Global warming/climate change
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Process by which organisms with favorable traits produce more successful offspring than organisms with less-favorable traits, ca
kirill115 [55]

Answer:

Natural selection

Explanation:

Natural selection is a process that causes heritable/favorable traits that are helpful for survival and reproduction to become more common as time goes on, and it gets passed from generation to generation.

4 0
3 years ago
IM READY TO GIVE AS MUCH POINTS AS U WANT MY TEACHER LEFT AND I NEED HELP ASAP
sleet_krkn [62]

Answer:

yes

Explanation:

thornless roses are often a result of a natural mutation that results in a chimera

8 0
3 years ago
I will mark brainliest
sineoko [7]

Answer:

D. Active transport

Explanation:

https://quizlet.com/164918859/bio-u3-flash-cards/

more info in this quizlet. It has a bunch of questions like this

plz give brainliest :'D

4 0
3 years ago
An orgnism's role or job in its environment is called its
Alexxandr [17]

Answer:

Your answer is going to be a niche.

Explanation:

5 0
3 years ago
Read 2 more answers
The logic behind doping is that more less red blood cells equals more less oxygen being carried to your muscles and therefore be
dedylja [7]

Answer:

The Effects of Altitude Training on Erythropoietic Response and Hematological Variables in Adult Athletes: A Narrative Review

Kamila Płoszczyca, Józef Langfort, and Miłosz Czuba

Additional article information

Abstract

Background: One of the goals of altitude training is to increase blood oxygen-carrying capacity in order to improve sea-level endurance performance in athletes. The elevated erythropoietin (EPO) production in hypoxia is a key factor in the achievement of enhanced hematological variables. The level of the EPO increase and acceleration of erythropoiesis depend on the duration of exposure and degree of hypoxia. Furthermore, many other factors may affect the hematological response to altitude training.

Aim: The purpose of this narrative review was to: (1) analyze the kinetics of EPO and hematological variables during and after altitude training; (2) summarize the current state of knowledge about the possible causes of individual or cohort differences in EPO and hematological response to altitude training; (3) formulate practical guidelines for athletes to improve the efficiency of altitude training.

Methods: A narrative review was performed following an electronic search of the databases PubMed/MEDLINE and SPORTDiscus via EBSCO for all English-language articles published between 1997 and 2017.

5 0
3 years ago
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