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pav-90 [236]
3 years ago
8

A scientific experiment is conducted to determine the effects of different levels of caffeine on exercise performance. in this e

xperiment, what are the levels of caffeine?
Biology
1 answer:
guajiro [1.7K]3 years ago
5 0
Answer:  The levels of caffeine are INDEPENDENT VARIABLES.
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What are some types of consumers in a tropical rainforest 5+ examples plz
gavmur [86]

Answer:

The Primary Consumers – the macaws, monkeys, agouti, tapir, butterflies, sloths, toucans. The Secondary Consumers – the jaguar and boa constrictor.

Explanation:

4 0
2 years ago
True during development the skeleton of a fetus is made of cartilage which is converted to bone before birth
yawa3891 [41]

Answer:

Early in gestation, a fetus has a cartilaginous skeleton that becomes bone in ... At birth, a newborn baby has over 300 bones, while on average an adult human has 206 bones ... It is composed of fibers and granular cells in a matrix. ... The hypertrophic chondrocytes (before apoptosis) secrete vascular endothelial cell growth ...

Explanation

n:When does the fetal cartilage turn to bone?

Key milestones in fetal bone development

Weeks pregnant Milestone

7 weeks Bone outlines for entire skeleton established; cartilage is forming

8 weeks Somites disappear; joints start forming

10 weeks Bone tissue forms and starts hardening (ossification)

16 weeks Your baby can move his limbs

8 0
3 years ago
5. A proposed set of statements or principles used to explain a group of facts or natural phenomena is a
aev [14]

Answer:

theory

Explanation:

A proposed set of statements or principles used to explain a group of facts or natural phenomena is a theory.

4 0
3 years ago
Which of the following is most likely to be an observation made by an anatomist?
Umnica [9.8K]
Maybe answer c) i can't name it exactly why but it seems reasonable .

i think because anatomist is a dissector
3 0
4 years ago
Read 2 more answers
When salt is dissolved in fresh water, the density of the water _________ because the mass of the water increases.
faltersainse [42]

Answer:

increase

Explanation:

increase

8 0
4 years ago
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